15146999489 has 2 divisors, whose sum is σ = 15146999490. Its totient is φ = 15146999488.

The previous prime is 15146999467. The next prime is 15146999503. The reversal of 15146999489 is 98499964151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9056757889 + 6090241600 = 95167^2 + 78040^2 .

It is a cyclic number.

It is not a de Polignac number, because 15146999489 - 2¹⁶ = 15146933953 is a prime.

It is a super-2 number, since 2×15146999489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15146999449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7573499744 + 7573499745.

It is an arithmetic number, because the mean of its divisors is an integer number (7573499745).

Almost surely, 2^15146999489 is an apocalyptic number.

It is an amenable number.

15146999489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15146999489 is an equidigital number, since it uses as much as digits as its factorization.

15146999489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 65.

The spelling of 15146999489 in words is "fifteen billion, one hundred forty-six million, nine hundred ninety-nine thousand, four hundred eighty-nine".