10249378731 has 6 divisors (see below), whose sum is σ = 14804658180. Its totient is φ = 6832919148.

The previous prime is 10249378729. The next prime is 10249378757. The reversal of 10249378731 is 13787394201.

10249378731 is a `hidden beast` number, since 1 + 0 + 249 + 378 + 7 + 31 = 666.

It is not a de Polignac number, because 10249378731 - 2¹ = 10249378729 is a prime.

It is a super-2 number, since 2×10249378731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10249371731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569409921 + ... + 569409938.

It is an arithmetic number, because the mean of its divisors is an integer number (2467443030).

Almost surely, 2^10249378731 is an apocalyptic number.

10249378731 is a deficient number, since it is larger than the sum of its proper divisors (4555279449).

10249378731 is a wasteful number, since it uses less digits than its factorization.

10249378731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138819865 (or 1138819862 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 10249378731 in words is "ten billion, two hundred forty-nine million, three hundred seventy-eight thousand, seven hundred thirty-one".