161056386 has 12 divisors (see below), whose sum is σ = 348955542. Its totient is φ = 53685456.

The previous prime is 161056367. The next prime is 161056393. The reversal of 161056386 is 683650161.

It is a happy number.

161056386 is a `hidden beast` number, since 1 + 6 + 10 + 5 + 638 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 74287161 = 9315^2 + 8619^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161056386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4473771 + ... + 4473806.

Almost surely, 2^161056386 is an apocalyptic number.

161056386 is an abundant number, since it is smaller than the sum of its proper divisors (187899156).

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

161056386 is a wasteful number, since it uses less digits than its factorization.

161056386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8947585 (or 8947582 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 161056386 is about 12690.7992656097. The cubic root of 161056386 is about 544.0756837643.

The spelling of 161056386 in words is "one hundred sixty-one million, fifty-six thousand, three hundred eighty-six".