1139838810 has 64 divisors (see below), whose sum is σ = 2994292224. Its totient is φ = 275400000.

The previous prime is 1139838803. The next prime is 1139838839. The reversal of 1139838810 is 188389311.

It is a super-2 number, since 2×1139838810² = 2598465025564432200, which contains 22 as substring.

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, 95685 + ... + 106935.

It is an arithmetic number, because the mean of its divisors is an integer number (46785816).

Almost surely, 2^1139838810 is an apocalyptic number.

1139838810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139838810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497146112).

1139838810 is an abundant number, since it is smaller than the sum of its proper divisors (1854453414).

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

1139838810 is a wasteful number, since it uses less digits than its factorization.

1139838810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 1139838810 is about 33761.4989299942. The cubic root of 1139838810 is about 1044.5946887839.

The spelling of 1139838810 in words is "one billion, one hundred thirty-nine million, eight hundred thirty-eight thousand, eight hundred ten".