1612921120 has 48 divisors (see below), whose sum is σ = 3819372480. Its totient is φ = 643670784.

The previous prime is 1612921109. The next prime is 1612921169. The reversal of 1612921120 is 211292161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58759 + ... + 81721.

It is an arithmetic number, because the mean of its divisors is an integer number (79570260).

Almost surely, 2^1612921120 is an apocalyptic number.

1612921120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1612921120 is an abundant number, since it is smaller than the sum of its proper divisors (2206451360).

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

1612921120 is a wasteful number, since it uses less digits than its factorization.

1612921120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23417 (or 23409 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1612921120 is about 40161.1892254201. The cubic root of 1612921120 is about 1172.7471230923.

It can be divided in two parts, 16129 and 21120, that added together give a square (37249 = 193²).

The spelling of 1612921120 in words is "one billion, six hundred twelve million, nine hundred twenty-one thousand, one hundred twenty".