161877874 has 8 divisors (see below), whose sum is σ = 243037548. Its totient is φ = 80865360.

The previous prime is 161877857. The next prime is 161877899. The reversal of 161877874 is 478778161.

It is a happy number.

161877874 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161112249 + 765625 = 12693^2 + 875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33997 + ... + 38464.

Almost surely, 2^161877874 is an apocalyptic number.

161877874 is a deficient number, since it is larger than the sum of its proper divisors (81159674).

161877874 is a wasteful number, since it uses less digits than its factorization.

161877874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73580.

The product of its digits is 526848, while the sum is 49.

The square root of 161877874 is about 12723.1235944637. The cubic root of 161877874 is about 544.9991571965. Note that the first 3 decimals are identical.

The spelling of 161877874 in words is "one hundred sixty-one million, eight hundred seventy-seven thousand, eight hundred seventy-four".