161637348 has 24 divisors (see below), whose sum is σ = 389320960. Its totient is φ = 52140960.

The previous prime is 161637337. The next prime is 161637361. The reversal of 161637348 is 843736161.

It is a super-2 number, since 2×161637348² = 52253264536946208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216883 + ... + 217626.

Almost surely, 2^161637348 is an apocalyptic number.

It is an amenable number.

161637348 is an abundant number, since it is smaller than the sum of its proper divisors (227683612).

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

161637348 is a wasteful number, since it uses less digits than its factorization.

161637348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434547 (or 434545 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 161637348 is about 12713.6677634741. The cubic root of 161637348 is about 544.7290946640.

The spelling of 161637348 in words is "one hundred sixty-one million, six hundred thirty-seven thousand, three hundred forty-eight".