8172307492 has 6 divisors (see below), whose sum is σ = 14301538118. Its totient is φ = 4086153744.

The previous prime is 8172307487. The next prime is 8172307523. The reversal of 8172307492 is 2947032718.

It can be written as a sum of positive squares in only one way, i.e., 5002167076 + 3170140416 = 70726^2 + 56304^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021538433 + ... + 1021538440.

Almost surely, 2^8172307492 is an apocalyptic number.

It is an amenable number.

8172307492 is a deficient number, since it is larger than the sum of its proper divisors (6129230626).

8172307492 is a wasteful number, since it uses less digits than its factorization.

8172307492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043076877 (or 2043076875 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 8172307492 is about 90400.8157706555. The cubic root of 8172307492 is about 2014.2570839488.

The spelling of 8172307492 in words is "eight billion, one hundred seventy-two million, three hundred seven thousand, four hundred ninety-two".