1630036440 has 128 divisors (see below), whose sum is σ = 5442508800. Its totient is φ = 433952640.

The previous prime is 1630036433. The next prime is 1630036453. The reversal of 1630036440 is 446300361.

1630036440 is a `hidden beast` number, since 16 + 3 + 0 + 0 + 3 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 1069519 + ... + 1071041.

It is an arithmetic number, because the mean of its divisors is an integer number (42519600).

Almost surely, 2^1630036440 is an apocalyptic number.

1630036440 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 1630036440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721254400).

1630036440 is an abundant number, since it is smaller than the sum of its proper divisors (3812472360).

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

1630036440 is a wasteful number, since it uses less digits than its factorization.

1630036440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1630036440 is about 40373.7097626661. The cubic root of 1630036440 is about 1176.8806918164.

The spelling of 1630036440 in words is "one billion, six hundred thirty million, thirty-six thousand, four hundred forty".