161451792 has 50 divisors (see below), whose sum is σ = 467292078. Its totient is φ = 53816832.

The previous prime is 161451791. The next prime is 161451803. The reversal of 161451792 is 297154161.

161451792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 153363456 + 8088336 = 12384^2 + 2844^2 .

It is a super-2 number, since 2×161451792² = 52133362280022528, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (161451791) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 60993 + ... + 63584.

Almost surely, 2^161451792 is an apocalyptic number.

161451792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161451792 is an abundant number, since it is smaller than the sum of its proper divisors (305840286).

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

161451792 is a wasteful number, since it uses less digits than its factorization.

161451792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124597 (or 124582 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 161451792 is about 12706.3681671829. The cubic root of 161451792 is about 544.5205693115.

The spelling of 161451792 in words is "one hundred sixty-one million, four hundred fifty-one thousand, seven hundred ninety-two".