1139260788 has 96 divisors (see below), whose sum is σ = 3087293440. Its totient is φ = 367416000.

The previous prime is 1139260781. The next prime is 1139260841. The reversal of 1139260788 is 8870629311.

1139260788 is a `hidden beast` number, since 1 + 1 + 39 + 2 + 607 + 8 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139260781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269088 + ... + 273288.

Almost surely, 2^1139260788 is an apocalyptic number.

1139260788 is a gapful number since it is divisible by the number (18) 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 1139260788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1543646720).

1139260788 is an abundant number, since it is smaller than the sum of its proper divisors (1948032652).

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

1139260788 is an equidigital number, since it uses as much as digits as its factorization.

1139260788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257 (or 4237 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1139260788 is about 33752.9374721668. The cubic root of 1139260788 is about 1044.4180846306.

The spelling of 1139260788 in words is "one billion, one hundred thirty-nine million, two hundred sixty thousand, seven hundred eighty-eight".