15193398493 has 48 divisors (see below), whose sum is σ = 19370588160. Its totient is φ = 11810219904.

The previous prime is 15193398487. The next prime is 15193398529. The reversal of 15193398493 is 39489339151.

It is not a de Polignac number, because 15193398493 - 2⁵ = 15193398461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15193398463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8817130 + ... + 8818852.

It is an arithmetic number, because the mean of its divisors is an integer number (403553920).

Almost surely, 2^15193398493 is an apocalyptic number.

15193398493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15193398493 is a deficient number, since it is larger than the sum of its proper divisors (4177189667).

15193398493 is a wasteful number, since it uses less digits than its factorization.

15193398493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1979 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 55.

The spelling of 15193398493 in words is "fifteen billion, one hundred ninety-three million, three hundred ninety-eight thousand, four hundred ninety-three".