161425378 has 16 divisors (see below), whose sum is σ = 246391200. Its totient is φ = 79301376.

The previous prime is 161425321. The next prime is 161425391. The reversal of 161425378 is 873524161.

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, 58825 + ... + 61507.

It is an arithmetic number, because the mean of its divisors is an integer number (15399450).

Almost surely, 2^161425378 is an apocalyptic number.

161425378 is a deficient number, since it is larger than the sum of its proper divisors (84965822).

161425378 is a wasteful number, since it uses less digits than its factorization.

161425378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201.

The product of its digits is 40320, while the sum is 37.

The square root of 161425378 is about 12705.3287245943. The cubic root of 161425378 is about 544.4908726230.

The spelling of 161425378 in words is "one hundred sixty-one million, four hundred twenty-five thousand, three hundred seventy-eight".