161164908 has 36 divisors (see below), whose sum is σ = 420533568. Its totient is φ = 51988320.

The previous prime is 161164907. The next prime is 161164909. The reversal of 161164908 is 809461161.

It is a happy number.

161164908 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 649 + 0 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (161164907) and next prime (161164909).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (161164901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71091 + ... + 73322.

It is an arithmetic number, because the mean of its divisors is an integer number (11681488).

Almost surely, 2^161164908 is an apocalyptic number.

161164908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161164908 is an abundant number, since it is smaller than the sum of its proper divisors (259368660).

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

161164908 is a wasteful number, since it uses less digits than its factorization.

161164908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144454 (or 144449 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 161164908 is about 12695.0741628397. The cubic root of 161164908 is about 544.1978582114.

The spelling of 161164908 in words is "one hundred sixty-one million, one hundred sixty-four thousand, nine hundred eight".