15432512189 has 2 divisors, whose sum is σ = 15432512190. Its totient is φ = 15432512188.

The previous prime is 15432512131. The next prime is 15432512191. The reversal of 15432512189 is 98121523451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12021368164 + 3411144025 = 109642^2 + 58405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15432512189 is a prime.

It is a super-3 number, since 3×15432512189³ (a number of 32 digits) contains 333 as substring.

Together with 15432512191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15432512119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7716256094 + 7716256095.

It is an arithmetic number, because the mean of its divisors is an integer number (7716256095).

Almost surely, 2^15432512189 is an apocalyptic number.

It is an amenable number.

15432512189 is a deficient number, since it is larger than the sum of its proper divisors (1).

15432512189 is an equidigital number, since it uses as much as digits as its factorization.

15432512189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The spelling of 15432512189 in words is "fifteen billion, four hundred thirty-two million, five hundred twelve thousand, one hundred eighty-nine".