161277084 has 18 divisors (see below), whose sum is σ = 407672720. Its totient is φ = 53759016.

The previous prime is 161277041. The next prime is 161277119. The reversal of 161277084 is 480772161.

161277084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4479919 = 161277084 / (1 + 6 + 1 + 2 + 7 + 7 + 0 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2239924 + ... + 2239995.

Almost surely, 2^161277084 is an apocalyptic number.

It is an amenable number.

161277084 is an abundant number, since it is smaller than the sum of its proper divisors (246395636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161277084 is a wasteful number, since it uses less digits than its factorization.

161277084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479929 (or 4479924 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 161277084 is about 12699.4914858824. The cubic root of 161277084 is about 544.3240887121.

The spelling of 161277084 in words is "one hundred sixty-one million, two hundred seventy-seven thousand, eighty-four".