715831189 has 4 divisors (see below), whose sum is σ = 757938924. Its totient is φ = 673723456.

The previous prime is 715831163. The next prime is 715831219. The reversal of 715831189 is 981138517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 981138517 = 131 ⋅7489607.

It can be written as a sum of positive squares in 2 ways, for example, as 617920164 + 97911025 = 24858^2 + 9895^2 .

It is a cyclic number.

It is not a de Polignac number, because 715831189 - 2⁹ = 715830677 is a prime.

It is a super-2 number, since 2×715831189² = 1024828582290307442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715832189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21053842 + ... + 21053875.

It is an arithmetic number, because the mean of its divisors is an integer number (189484731).

Almost surely, 2^715831189 is an apocalyptic number.

It is an amenable number.

715831189 is a deficient number, since it is larger than the sum of its proper divisors (42107735).

715831189 is a wasteful number, since it uses less digits than its factorization.

715831189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42107734.

The product of its digits is 60480, while the sum is 43.

The square root of 715831189 is about 26755.0217529345. The cubic root of 715831189 is about 894.5477731596.

The spelling of 715831189 in words is "seven hundred fifteen million, eight hundred thirty-one thousand, one hundred eighty-nine".