161478886 has 16 divisors (see below), whose sum is σ = 258345936. Its totient is φ = 75433216.

The previous prime is 161478881. The next prime is 161478913. The reversal of 161478886 is 688874161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161478881) 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, 12676 + ... + 21991.

It is an arithmetic number, because the mean of its divisors is an integer number (16146621).

Almost surely, 2^161478886 is an apocalyptic number.

161478886 is a deficient number, since it is larger than the sum of its proper divisors (96867050).

161478886 is a wasteful number, since it uses less digits than its factorization.

161478886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34823.

The product of its digits is 516096, while the sum is 49.

The square root of 161478886 is about 12707.4342807665. The cubic root of 161478886 is about 544.5510271444.

The spelling of 161478886 in words is "one hundred sixty-one million, four hundred seventy-eight thousand, eight hundred eighty-six".