161245908 has 72 divisors (see below), whose sum is σ = 419607552. Its totient is φ = 52183872.

The previous prime is 161245871. The next prime is 161245937. The reversal of 161245908 is 809542161.

161245908 is a `hidden beast` number, since 1 + 61 + 2 + 4 + 590 + 8 = 666.

161245908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265341 + ... + 265947.

Almost surely, 2^161245908 is an apocalyptic number.

161245908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161245908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209803776).

161245908 is an abundant number, since it is smaller than the sum of its proper divisors (258361644).

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

161245908 is a wasteful number, since it uses less digits than its factorization.

161245908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 161245908 is about 12698.2639758354. The cubic root of 161245908 is about 544.2890125542.

The spelling of 161245908 in words is "one hundred sixty-one million, two hundred forty-five thousand, nine hundred eight".