15234923493 has 12 divisors (see below), whose sum is σ = 22600757868. Its totient is φ = 9882112320.

The previous prime is 15234923491. The next prime is 15234923497. The reversal of 15234923493 is 39432943251.

15234923493 is a `hidden beast` number, since 1 + 523 + 4 + 9 + 2 + 34 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14295071844 + 939851649 = 119562^2 + 30657^2 .

It is not a de Polignac number, because 15234923493 - 2¹ = 15234923491 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15234923491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22874928 + ... + 22875593.

It is an arithmetic number, because the mean of its divisors is an integer number (1883396489).

Almost surely, 2^15234923493 is an apocalyptic number.

It is an amenable number.

15234923493 is a deficient number, since it is larger than the sum of its proper divisors (7365834375).

15234923493 is a wasteful number, since it uses less digits than its factorization.

15234923493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45750564 (or 45750561 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The spelling of 15234923493 in words is "fifteen billion, two hundred thirty-four million, nine hundred twenty-three thousand, four hundred ninety-three".