161911082 has 16 divisors (see below), whose sum is σ = 249841152. Its totient is φ = 78650880.

The previous prime is 161911081. The next prime is 161911093. The reversal of 161911082 is 280119161.

It is not an unprimeable number, because it can be changed into a prime (161911081) 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, 11498 + ... + 21354.

It is an arithmetic number, because the mean of its divisors is an integer number (15615072).

Almost surely, 2^161911082 is an apocalyptic number.

161911082 is a deficient number, since it is larger than the sum of its proper divisors (87930070).

161911082 is a wasteful number, since it uses less digits than its factorization.

161911082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093.

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 161911082 is about 12724.4285529842. The cubic root of 161911082 is about 545.0364221093.

The spelling of 161911082 in words is "one hundred sixty-one million, nine hundred eleven thousand, eighty-two".