161695652 has 24 divisors (see below), whose sum is σ = 290195136. Its totient is φ = 78791328.

The previous prime is 161695649. The next prime is 161695669. The reversal of 161695652 is 256596161.

It is a super-2 number, since 2×161695652² = 52290967751410208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110558 + ... + 112010.

It is an arithmetic number, because the mean of its divisors is an integer number (12091464).

Almost surely, 2^161695652 is an apocalyptic number.

It is an amenable number.

161695652 is a deficient number, since it is larger than the sum of its proper divisors (128499484).

161695652 is a wasteful number, since it uses less digits than its factorization.

161695652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147 (or 2145 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 161695652 is about 12715.9605221155. The cubic root of 161695652 is about 544.7945829677.

The spelling of 161695652 in words is "one hundred sixty-one million, six hundred ninety-five thousand, six hundred fifty-two".