1612138172 has 48 divisors (see below), whose sum is σ = 2981422080. Its totient is φ = 761272512.

The previous prime is 1612138139. The next prime is 1612138223. The reversal of 1612138172 is 2718312161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3451883 + ... + 3452349.

It is an arithmetic number, because the mean of its divisors is an integer number (62112960).

Almost surely, 2^1612138172 is an apocalyptic number.

It is an amenable number.

1612138172 is a deficient number, since it is larger than the sum of its proper divisors (1369283908).

1612138172 is a wasteful number, since it uses less digits than its factorization.

1612138172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 888 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 1612138172 is about 40151.4404722919. The cubic root of 1612138172 is about 1172.5573331484.

The spelling of 1612138172 in words is "one billion, six hundred twelve million, one hundred thirty-eight thousand, one hundred seventy-two".