161612396 has 12 divisors (see below), whose sum is σ = 308532840. Its totient is φ = 73460160.

The previous prime is 161612383. The next prime is 161612417. The reversal of 161612396 is 693216161.

It is a super-2 number, since 2×161612396² = 52237133081721632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836461 + ... + 1836548.

It is an arithmetic number, because the mean of its divisors is an integer number (25711070).

Almost surely, 2^161612396 is an apocalyptic number.

It is an amenable number.

161612396 is a deficient number, since it is larger than the sum of its proper divisors (146920444).

161612396 is a wasteful number, since it uses less digits than its factorization.

161612396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673024 (or 3673022 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 161612396 is about 12712.6864194788. The cubic root of 161612396 is about 544.7010632302.

The spelling of 161612396 in words is "one hundred sixty-one million, six hundred twelve thousand, three hundred ninety-six".