161767914 has 48 divisors (see below), whose sum is σ = 410580576. Its totient is φ = 42016800.

The previous prime is 161767909. The next prime is 161767973. The reversal of 161767914 is 419767161.

It is a super-2 number, since 2×161767914² = 52337715999822792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 23 ways as a sum of consecutive naturals, for example, 21777 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (8553762).

Almost surely, 2^161767914 is an apocalyptic number.

161767914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161767914 is an abundant number, since it is smaller than the sum of its proper divisors (248812662).

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

161767914 is a wasteful number, since it uses less digits than its factorization.

161767914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50051 (or 50044 counting only the distinct ones).

The product of its digits is 63504, while the sum is 42.

The square root of 161767914 is about 12718.8015944899. The cubic root of 161767914 is about 544.8757273535.

It can be divided in two parts, 16176 and 7914, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 161767914 in words is "one hundred sixty-one million, seven hundred sixty-seven thousand, nine hundred fourteen".