1139525520 has 80 divisors (see below), whose sum is σ = 4037182080. Its totient is φ = 260462592.

The previous prime is 1139525503. The next prime is 1139525533. The reversal of 1139525520 is 255259311.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337465 + ... + 340824.

It is an arithmetic number, because the mean of its divisors is an integer number (50464776).

Almost surely, 2^1139525520 is an apocalyptic number.

1139525520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1139525520 is an abundant number, since it is smaller than the sum of its proper divisors (2897656560).

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

1139525520 is a wasteful number, since it uses less digits than its factorization.

1139525520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678312 (or 678306 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1139525520 is about 33756.8588586083. The cubic root of 1139525520 is about 1044.4989761109.

The spelling of 1139525520 in words is "one billion, one hundred thirty-nine million, five hundred twenty-five thousand, five hundred twenty".