161261792 has 24 divisors (see below), whose sum is σ = 317932776. Its totient is φ = 80516992.

The previous prime is 161261791. The next prime is 161261827. The reversal of 161261792 is 297162161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161261791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22343 + ... + 28665.

It is an arithmetic number, because the mean of its divisors is an integer number (13247199).

Almost surely, 2^161261792 is an apocalyptic number.

It is an amenable number.

161261792 is a deficient number, since it is larger than the sum of its proper divisors (156670984).

161261792 is an equidigital number, since it uses as much as digits as its factorization.

161261792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130 (or 7122 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 161261792 is about 12698.8894002586. The cubic root of 161261792 is about 544.3068842280.

The spelling of 161261792 in words is "one hundred sixty-one million, two hundred sixty-one thousand, seven hundred ninety-two".