161505336 has 16 divisors (see below), whose sum is σ = 403763400. Its totient is φ = 53835104.

The previous prime is 161505317. The next prime is 161505341. The reversal of 161505336 is 633505161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3364671 + ... + 3364718.

Almost surely, 2^161505336 is an apocalyptic number.

It is an amenable number.

161505336 is an abundant number, since it is smaller than the sum of its proper divisors (242258064).

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

161505336 is a wasteful number, since it uses less digits than its factorization.

161505336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729398 (or 6729394 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 161505336 is about 12708.4749675168. The cubic root of 161505336 is about 544.5807577358.

The spelling of 161505336 in words is "one hundred sixty-one million, five hundred five thousand, three hundred thirty-six".