1623363840 has 432 divisors, whose sum is σ = 6589005696. Its totient is φ = 361267200.

The previous prime is 1623363823. The next prime is 1623363869. The reversal of 1623363840 is 483633261.

1623363840 is a `hidden beast` number, since 16 + 2 + 3 + 3 + 638 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1623363795 and 1623363804.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3305995 + ... + 3306485.

It is an arithmetic number, because the mean of its divisors is an integer number (15252328).

Almost surely, 2^1623363840 is an apocalyptic number.

1623363840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623363840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3294502848).

1623363840 is an abundant number, since it is smaller than the sum of its proper divisors (4965641856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623363840 is a wasteful number, since it uses less digits than its factorization.

1623363840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 1623363840 is about 40290.9895634247. The cubic root of 1623363840 is about 1175.2726308677.

It can be divided in two parts, 162336 and 3840, that added together give a triangular number (166176 = T₅₇₆).

The spelling of 1623363840 in words is "one billion, six hundred twenty-three million, three hundred sixty-three thousand, eight hundred forty".