1612944612 has 18 divisors (see below), whose sum is σ = 4077165638. Its totient is φ = 537648192.

The previous prime is 1612944583. The next prime is 1612944647. The reversal of 1612944612 is 2164492161.

1612944612 is a `hidden beast` number, since 16 + 1 + 29 + 4 + 4 + 612 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1491195456 + 121749156 = 38616^2 + 11034^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 44804017 = 1612944612 / (1 + 6 + 1 + 2 + 9 + 4 + 4 + 6 + 1 + 2).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22401973 + ... + 22402044.

Almost surely, 2^1612944612 is an apocalyptic number.

1612944612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1612944612 is an abundant number, since it is smaller than the sum of its proper divisors (2464221026).

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

1612944612 is a wasteful number, since it uses less digits than its factorization.

1612944612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44804027 (or 44804022 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1612944612 is about 40161.4816957741. The cubic root of 1612944612 is about 1172.7528167044.

The spelling of 1612944612 in words is "one billion, six hundred twelve million, nine hundred forty-four thousand, six hundred twelve".