15392620489 has 3 divisors (see below), whose sum is σ = 15392744557. Its totient is φ = 15392496422.

The previous prime is 15392620469. The next prime is 15392620549. The reversal of 15392620489 is 98402629351.

The square root of 15392620489 is 124067.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 15392620489 - 2⁷ = 15392620361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15392620469) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 62034 + ... + 186100.

Almost surely, 2^15392620489 is an apocalyptic number.

15392620489 is the 124067-th square number.

15392620489 is the 62034-th centered octagonal number.

It is an amenable number.

15392620489 is a deficient number, since it is larger than the sum of its proper divisors (124068).

15392620489 is an frugal number, since it uses more digits than its factorization.

15392620489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248134 (or 124067 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 15392620489 by its sum of digits (49), we get a square (754238403961 = 868469²).

The spelling of 15392620489 in words is "fifteen billion, three hundred ninety-two million, six hundred twenty thousand, four hundred eighty-nine".