161473992 has 16 divisors (see below), whose sum is σ = 403685040. Its totient is φ = 53824656.

The previous prime is 161473981. The next prime is 161473993. The reversal of 161473992 is 299374161.

It is not an unprimeable number, because it can be changed into a prime (161473993) 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, 3364018 + ... + 3364065.

It is an arithmetic number, because the mean of its divisors is an integer number (25230315).

Almost surely, 2^161473992 is an apocalyptic number.

161473992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161473992 is an abundant number, since it is smaller than the sum of its proper divisors (242211048).

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

161473992 is a wasteful number, since it uses less digits than its factorization.

161473992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728092 (or 6728088 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 161473992 is about 12707.2417148648. The cubic root of 161473992 is about 544.5455257861.

The spelling of 161473992 in words is "one hundred sixty-one million, four hundred seventy-three thousand, nine hundred ninety-two".