161179440 has 40 divisors (see below), whose sum is σ = 499657008. Its totient is φ = 42981120.

The previous prime is 161179439. The next prime is 161179463. The reversal of 161179440 is 44971161.

161179440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335551 + ... + 336030.

Almost surely, 2^161179440 is an apocalyptic number.

161179440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161179440 is an abundant number, since it is smaller than the sum of its proper divisors (338477568).

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

161179440 is a wasteful number, since it uses less digits than its factorization.

161179440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671597 (or 671591 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 161179440 is about 12695.6464979142. The cubic root of 161179440 is about 544.2142142236.

The spelling of 161179440 in words is "one hundred sixty-one million, one hundred seventy-nine thousand, four hundred forty".