161072892 has 36 divisors (see below), whose sum is σ = 431108496. Its totient is φ = 50532480.

The previous prime is 161072867. The next prime is 161072893. The reversal of 161072892 is 298270161.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161072893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130984 + ... + 132207.

It is an arithmetic number, because the mean of its divisors is an integer number (11975236).

Almost surely, 2^161072892 is an apocalyptic number.

161072892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161072892 is an abundant number, since it is smaller than the sum of its proper divisors (270035604).

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

161072892 is a wasteful number, since it uses less digits than its factorization.

161072892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263218 (or 263213 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 161072892 is about 12691.4495625992. The cubic root of 161072892 is about 544.0942698150.

The spelling of 161072892 in words is "one hundred sixty-one million, seventy-two thousand, eight hundred ninety-two".