15316471989 has 72 divisors (see below), whose sum is σ = 28360524192. Its totient is φ = 7891007040.

The previous prime is 15316471987. The next prime is 15316471991. The reversal of 15316471989 is 98917461351.

15316471989 is a `hidden beast` number, since 153 + 16 + 471 + 9 + 8 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (15316471987) and next prime (15316471991).

It is not a de Polignac number, because 15316471989 - 2¹ = 15316471987 is a prime.

It is a super-2 number, since 2×15316471989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15316471987) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 215454 + ... + 277584.

Almost surely, 2^15316471989 is an apocalyptic number.

It is an amenable number.

15316471989 is a deficient number, since it is larger than the sum of its proper divisors (13044052203).

15316471989 is a wasteful number, since it uses less digits than its factorization.

15316471989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62207 (or 62197 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 15316471989 in words is "fifteen billion, three hundred sixteen million, four hundred seventy-one thousand, nine hundred eighty-nine".