1612684872 has 48 divisors (see below), whose sum is σ = 4624614540. Its totient is φ = 505939968.

The previous prime is 1612684861. The next prime is 1612684897. The reversal of 1612684872 is 2784862161.

1612684872 is a `hidden beast` number, since 161 + 2 + 6 + 8 + 487 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1592488836 + 20196036 = 39906^2 + 4494^2 .

It is a Smith number, since the sum of its digits (45) 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 11 ways as a sum of consecutive naturals, for example, 657553 + ... + 660000.

Almost surely, 2^1612684872 is an apocalyptic number.

1612684872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1612684872 is an abundant number, since it is smaller than the sum of its proper divisors (3011929668).

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

1612684872 is a wasteful number, since it uses less digits than its factorization.

1612684872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317582 (or 1317575 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1612684872 is about 40158.2478701449. The cubic root of 1612684872 is about 1172.6898620381.

The spelling of 1612684872 in words is "one billion, six hundred twelve million, six hundred eighty-four thousand, eight hundred seventy-two".