1138872250 has 16 divisors (see below), whose sum is σ = 2131969320. Its totient is φ = 455548800.

The previous prime is 1138872239. The next prime is 1138872271. The reversal of 1138872250 is 522788311.

It can be written as a sum of positive squares in 4 ways, for example, as 555214969 + 583657281 = 23563^2 + 24159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277495 + ... + 2277994.

Almost surely, 2^1138872250 is an apocalyptic number.

1138872250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138872250 is a deficient number, since it is larger than the sum of its proper divisors (993097070).

1138872250 is an equidigital number, since it uses as much as digits as its factorization.

1138872250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555506 (or 4555496 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1138872250 is about 33747.1813637821. The cubic root of 1138872250 is about 1044.2993403073.

It can be divided in two parts, 11388 and 72250, that added together give a palindrome (83638).

The spelling of 1138872250 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-two thousand, two hundred fifty".