161564029 has 16 divisors (see below), whose sum is σ = 188204544. Its totient is φ = 137214000.

The previous prime is 161564021. The next prime is 161564047. The reversal of 161564029 is 920465161.

161564029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161564029 - 2³ = 161564021 is a prime.

It is a super-2 number, since 2×161564029² = 52205870933425682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161563985 and 161564003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161564021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3454 + ... + 18304.

It is an arithmetic number, because the mean of its divisors is an integer number (11762784).

Almost surely, 2^161564029 is an apocalyptic number.

It is an amenable number.

161564029 is a deficient number, since it is larger than the sum of its proper divisors (26640515).

161564029 is a wasteful number, since it uses less digits than its factorization.

161564029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14928.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 161564029 is about 12710.7839648072. The cubic root of 161564029 is about 544.6467188325.

The spelling of 161564029 in words is "one hundred sixty-one million, five hundred sixty-four thousand, twenty-nine".