1138708940 has 24 divisors (see below), whose sum is σ = 2392522272. Its totient is φ = 455248640.

The previous prime is 1138708933. The next prime is 1138709059. The reversal of 1138708940 is 498078311.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28100 + ... + 55380.

It is an arithmetic number, because the mean of its divisors is an integer number (99688428).

Almost surely, 2^1138708940 is an apocalyptic number.

1138708940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138708940 is an abundant number, since it is smaller than the sum of its proper divisors (1253813332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138708940 is a wasteful number, since it uses less digits than its factorization.

1138708940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29377 (or 29375 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1138708940 is about 33744.7616675537. The cubic root of 1138708940 is about 1044.2494217211.

The spelling of 1138708940 in words is "one billion, one hundred thirty-eight million, seven hundred eight thousand, nine hundred forty".