161615036 has 12 divisors (see below), whose sum is σ = 308537880. Its totient is φ = 73461360.

The previous prime is 161615021. The next prime is 161615117. The reversal of 161615036 is 630516161.

It is a super-2 number, since 2×161615036² = 52238839722562592, which contains 22 as substring.

It is a congruent number.

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, 1836491 + ... + 1836578.

It is an arithmetic number, because the mean of its divisors is an integer number (25711490).

Almost surely, 2^161615036 is an apocalyptic number.

It is an amenable number.

161615036 is a deficient number, since it is larger than the sum of its proper divisors (146922844).

161615036 is a wasteful number, since it uses less digits than its factorization.

161615036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673084 (or 3673082 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 161615036 is about 12712.7902523404. The cubic root of 161615036 is about 544.7040291805.

The spelling of 161615036 in words is "one hundred sixty-one million, six hundred fifteen thousand, thirty-six".