1923645480 has 128 divisors (see below), whose sum is σ = 6216376320. Its totient is φ = 474819840.

The previous prime is 1923645461. The next prime is 1923645541. The reversal of 1923645480 is 845463291.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74319 + ... + 96801.

It is an arithmetic number, because the mean of its divisors is an integer number (48565440).

Almost surely, 2^1923645480 is an apocalyptic number.

1923645480 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 1923645480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3108188160).

1923645480 is an abundant number, since it is smaller than the sum of its proper divisors (4292730840).

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

1923645480 is a wasteful number, since it uses less digits than its factorization.

1923645480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22551 (or 22547 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1923645480 is about 43859.3830325963. The cubic root of 1923645480 is about 1243.6791268588.

The spelling of 1923645480 in words is "one billion, nine hundred twenty-three million, six hundred forty-five thousand, four hundred eighty".