16161090 has 32 divisors (see below), whose sum is σ = 42313536. Its totient is φ = 3917760.

The previous prime is 16161071. The next prime is 16161107. The reversal of 16161090 is 9016161.

16161090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16161090² = 522361659976200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 16161090.

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, 24157 + ... + 24816.

It is an arithmetic number, because the mean of its divisors is an integer number (1322298).

Almost surely, 2^16161090 is an apocalyptic number.

16161090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16161090 is an abundant number, since it is smaller than the sum of its proper divisors (26152446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16161090 is a wasteful number, since it uses less digits than its factorization.

16161090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48994.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 16161090 is about 4020.0858199795. The cubic root of 16161090 is about 252.8270571538.

Subtracting from 16161090 its reverse (9016161), we obtain a square (7144929 = 2673²).

The spelling of 16161090 in words is "sixteen million, one hundred sixty-one thousand, ninety".