161453508 has 12 divisors (see below), whose sum is σ = 376724880. Its totient is φ = 53817832.

The previous prime is 161453497. The next prime is 161453521. The reversal of 161453508 is 805354161.

It is a tau number, because it is divible by the number of its divisors (12).

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, 6727218 + ... + 6727241.

It is an arithmetic number, because the mean of its divisors is an integer number (31393740).

Almost surely, 2^161453508 is an apocalyptic number.

It is an amenable number.

161453508 is an abundant number, since it is smaller than the sum of its proper divisors (215271372).

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

161453508 is a wasteful number, since it uses less digits than its factorization.

161453508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13454466 (or 13454464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 161453508 is about 12706.4356921994. The cubic root of 161453508 is about 544.5224984611.

The spelling of 161453508 in words is "one hundred sixty-one million, four hundred fifty-three thousand, five hundred eight".