161022495 has 16 divisors (see below), whose sum is σ = 258766560. Its totient is φ = 85501824.

The previous prime is 161022467. The next prime is 161022541. The reversal of 161022495 is 594220161.

It is not a de Polignac number, because 161022495 - 2¹⁶ = 160956959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20004 + ... + 26873.

It is an arithmetic number, because the mean of its divisors is an integer number (16172910).

Almost surely, 2^161022495 is an apocalyptic number.

161022495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161022495 is a deficient number, since it is larger than the sum of its proper divisors (97744065).

161022495 is a wasteful number, since it uses less digits than its factorization.

161022495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47114.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 161022495 is about 12689.4639366681. The cubic root of 161022495 is about 544.0375179124.

The spelling of 161022495 in words is "one hundred sixty-one million, twenty-two thousand, four hundred ninety-five".