1630675872 has 72 divisors (see below), whose sum is σ = 5299703136. Its totient is φ = 465906816.

The previous prime is 1630675843. The next prime is 1630675883. The reversal of 1630675872 is 2785760361.

1630675872 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 67 + 587 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402418 + ... + 406449.

It is an arithmetic number, because the mean of its divisors is an integer number (73606988).

Almost surely, 2^1630675872 is an apocalyptic number.

1630675872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1630675872 is an abundant number, since it is smaller than the sum of its proper divisors (3669027264).

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

1630675872 is a wasteful number, since it uses less digits than its factorization.

1630675872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808890 (or 808879 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 1630675872 is about 40381.6279018070. The cubic root of 1630675872 is about 1177.0345609316.

The spelling of 1630675872 in words is "one billion, six hundred thirty million, six hundred seventy-five thousand, eight hundred seventy-two".