15201163849 has 9 divisors (see below), whose sum is σ = 15328592877. Its totient is φ = 15074788524.

The previous prime is 15201163847. The next prime is 15201163891. The reversal of 15201163849 is 94836110251.

The square root of 15201163849 is 123293.

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

It is not a de Polignac number, because 15201163849 - 2¹ = 15201163847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15201163847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17137284 + ... + 17138170.

Almost surely, 2^15201163849 is an apocalyptic number.

15201163849 is the 123293-rd square number.

15201163849 is the 61647-th centered octagonal number.

It is an amenable number.

15201163849 is a deficient number, since it is larger than the sum of its proper divisors (127429028).

15201163849 is an frugal number, since it uses more digits than its factorization.

15201163849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 15201163849 in words is "fifteen billion, two hundred one million, one hundred sixty-three thousand, eight hundred forty-nine".