161354408 has 8 divisors (see below), whose sum is σ = 302539530. Its totient is φ = 80677200.

The previous prime is 161354377. The next prime is 161354423. The reversal of 161354408 is 804453161.

It can be written as a sum of positive squares in only one way, i.e., 160833124 + 521284 = 12682^2 + 722^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10084643 + ... + 10084658.

Almost surely, 2^161354408 is an apocalyptic number.

It is an amenable number.

161354408 is a deficient number, since it is larger than the sum of its proper divisors (141185122).

161354408 is a wasteful number, since it uses less digits than its factorization.

161354408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169307 (or 20169303 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 161354408 is about 12702.5354949317. The cubic root of 161354408 is about 544.4110665394.

The spelling of 161354408 in words is "one hundred sixty-one million, three hundred fifty-four thousand, four hundred eight".