15381398197 has 16 divisors (see below), whose sum is σ = 17003692800. Its totient is φ = 13796677440.

The previous prime is 15381398167. The next prime is 15381398231. The reversal of 15381398197 is 79189318351.

15381398197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15381398197 - 2⁷ = 15381398069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15381398107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479943 + ... + 1490299.

It is an arithmetic number, because the mean of its divisors is an integer number (1062730800).

Almost surely, 2^15381398197 is an apocalyptic number.

It is an amenable number.

15381398197 is a deficient number, since it is larger than the sum of its proper divisors (1622294603).

15381398197 is a wasteful number, since it uses less digits than its factorization.

15381398197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156.

The product of its digits is 1632960, while the sum is 55.

The spelling of 15381398197 in words is "fifteen billion, three hundred eighty-one million, three hundred ninety-eight thousand, one hundred ninety-seven".