1139393520 has 160 divisors (see below), whose sum is σ = 4131283200. Its totient is φ = 287836416.

The previous prime is 1139393513. The next prime is 1139393551. The reversal of 1139393520 is 253939311.

1139393520 is a `hidden beast` number, since 11 + 39 + 3 + 93 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27159 + ... + 54921.

It is an arithmetic number, because the mean of its divisors is an integer number (25820520).

Almost surely, 2^1139393520 is an apocalyptic number.

1139393520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139393520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2065641600).

1139393520 is an abundant number, since it is smaller than the sum of its proper divisors (2991889680).

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

1139393520 is a wasteful number, since it uses less digits than its factorization.

1139393520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27804 (or 27792 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 1139393520 is about 33754.9036437671. The cubic root of 1139393520 is about 1044.4586437719.

The spelling of 1139393520 in words is "one billion, one hundred thirty-nine million, three hundred ninety-three thousand, five hundred twenty".