15045949489 has 2 divisors, whose sum is σ = 15045949490. Its totient is φ = 15045949488.

The previous prime is 15045949469. The next prime is 15045949519. The reversal of 15045949489 is 98494954051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14515430400 + 530519089 = 120480^2 + 23033^2 .

It is a cyclic number.

It is not a de Polignac number, because 15045949489 - 2⁹ = 15045948977 is a prime.

It is a super-3 number, since 3×15045949489³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (15045949409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7522974744 + 7522974745.

It is an arithmetic number, because the mean of its divisors is an integer number (7522974745).

Almost surely, 2^15045949489 is an apocalyptic number.

It is an amenable number.

15045949489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15045949489 is an equidigital number, since it uses as much as digits as its factorization.

15045949489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 15045949489 in words is "fifteen billion, forty-five million, nine hundred forty-nine thousand, four hundred eighty-nine".