161518495 has 8 divisors (see below), whose sum is σ = 193934160. Its totient is φ = 129140160.

The previous prime is 161518477. The next prime is 161518501. The reversal of 161518495 is 594815161.

161518495 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 de Polignac number, because none of the positive numbers 2^k-161518495 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291 + ... + 18019.

It is an arithmetic number, because the mean of its divisors is an integer number (24241770).

Almost surely, 2^161518495 is an apocalyptic number.

161518495 is a deficient number, since it is larger than the sum of its proper divisors (32415665).

161518495 is a wasteful number, since it uses less digits than its factorization.

161518495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18665.

The product of its digits is 43200, while the sum is 40.

The square root of 161518495 is about 12708.9926823490. The cubic root of 161518495 is about 544.5955476363.

The spelling of 161518495 in words is "one hundred sixty-one million, five hundred eighteen thousand, four hundred ninety-five".