161327138 has 16 divisors (see below), whose sum is σ = 291117120. Its totient is φ = 65501136.

The previous prime is 161327107. The next prime is 161327191. The reversal of 161327138 is 831723161.

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, 302981 + ... + 303512.

It is an arithmetic number, because the mean of its divisors is an integer number (18194820).

Almost surely, 2^161327138 is an apocalyptic number.

161327138 is a deficient number, since it is larger than the sum of its proper divisors (129789982).

161327138 is a wasteful number, since it uses less digits than its factorization.

161327138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606521.

The product of its digits is 6048, while the sum is 32.

The square root of 161327138 is about 12701.4620418281. The cubic root of 161327138 is about 544.3803950785.

The spelling of 161327138 in words is "one hundred sixty-one million, three hundred twenty-seven thousand, one hundred thirty-eight".