1139953608 has 64 divisors (see below), whose sum is σ = 3174912000. Its totient is φ = 378979776.

The previous prime is 1139953589. The next prime is 1139953613. The reversal of 1139953608 is 8063599311.

1139953608 is a `hidden beast` number, since 1 + 1 + 39 + 9 + 5 + 3 + 608 = 666.

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, 77241 + ... + 90807.

It is an arithmetic number, because the mean of its divisors is an integer number (49608000).

Almost surely, 2^1139953608 is an apocalyptic number.

1139953608 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 1139953608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587456000).

1139953608 is an abundant number, since it is smaller than the sum of its proper divisors (2034958392).

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

1139953608 is a wasteful number, since it uses less digits than its factorization.

1139953608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13971 (or 13961 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1139953608 is about 33763.1990190503. The cubic root of 1139953608 is about 1044.6297561269.

The spelling of 1139953608 in words is "one billion, one hundred thirty-nine million, nine hundred fifty-three thousand, six hundred eight".