15492299749 has 2 divisors, whose sum is σ = 15492299750. Its totient is φ = 15492299748.

The previous prime is 15492299723. The next prime is 15492299777. The reversal of 15492299749 is 94799229451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15388402500 + 103897249 = 124050^2 + 10193^2 .

It is a cyclic number.

It is not a de Polignac number, because 15492299749 - 2⁵ = 15492299717 is a prime.

It is a super-2 number, since 2×15492299749² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15492249749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7746149874 + 7746149875.

It is an arithmetic number, because the mean of its divisors is an integer number (7746149875).

Almost surely, 2^15492299749 is an apocalyptic number.

It is an amenable number.

15492299749 is a deficient number, since it is larger than the sum of its proper divisors (1).

15492299749 is an equidigital number, since it uses as much as digits as its factorization.

15492299749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 61.

The spelling of 15492299749 in words is "fifteen billion, four hundred ninety-two million, two hundred ninety-nine thousand, seven hundred forty-nine".