161534863 has 8 divisors (see below), whose sum is σ = 185315328. Its totient is φ = 137930424.

The previous prime is 161534837. The next prime is 161534873. The reversal of 161534863 is 368435161.

161534863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161534863 - 2²¹ = 159437711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161534803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42031 + ... + 45712.

It is an arithmetic number, because the mean of its divisors is an integer number (23164416).

Almost surely, 2^161534863 is an apocalyptic number.

161534863 is a deficient number, since it is larger than the sum of its proper divisors (23780465).

161534863 is an equidigital number, since it uses as much as digits as its factorization.

161534863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88013.

The product of its digits is 51840, while the sum is 37.

The square root of 161534863 is about 12709.6366195104. The cubic root of 161534863 is about 544.6139431331.

The spelling of 161534863 in words is "one hundred sixty-one million, five hundred thirty-four thousand, eight hundred sixty-three".