161138354 has 32 divisors (see below), whose sum is σ = 277536000. Its totient is φ = 69548544.

The previous prime is 161138333. The next prime is 161138357. The reversal of 161138354 is 453831161.

161138354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161138354.

It is not an unprimeable number, because it can be changed into a prime (161138357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36962 + ... + 41090.

It is an arithmetic number, because the mean of its divisors is an integer number (8673000).

Almost surely, 2^161138354 is an apocalyptic number.

161138354 is a deficient number, since it is larger than the sum of its proper divisors (116397646).

161138354 is a wasteful number, since it uses less digits than its factorization.

161138354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242.

The product of its digits is 8640, while the sum is 32.

The square root of 161138354 is about 12694.0282810462. The cubic root of 161138354 is about 544.1679686946.

The spelling of 161138354 in words is "one hundred sixty-one million, one hundred thirty-eight thousand, three hundred fifty-four".