161814368 has 12 divisors (see below), whose sum is σ = 318572100. Its totient is φ = 80907168.

The previous prime is 161814319. The next prime is 161814379. The reversal of 161814368 is 863418161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528318 + ... + 2528381.

It is an arithmetic number, because the mean of its divisors is an integer number (26547675).

Almost surely, 2^161814368 is an apocalyptic number.

It is an amenable number.

161814368 is a deficient number, since it is larger than the sum of its proper divisors (156757732).

161814368 is an equidigital number, since it uses as much as digits as its factorization.

161814368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056709 (or 5056701 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 161814368 is about 12720.6276574704. The cubic root of 161814368 is about 544.9278786813.

The spelling of 161814368 in words is "one hundred sixty-one million, eight hundred fourteen thousand, three hundred sixty-eight".