1139880631 has 2 divisors, whose sum is σ = 1139880632. Its totient is φ = 1139880630.

The previous prime is 1139880601. The next prime is 1139880697. The reversal of 1139880631 is 1360889311.

It is a weak prime.

It is an emirp because it is prime and its reverse (1360889311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139880631 - 2¹³ = 1139872439 is a prime.

It is a super-2 number, since 2×1139880631² = 2598655705857916322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139880601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569940315 + 569940316.

It is an arithmetic number, because the mean of its divisors is an integer number (569940316).

Almost surely, 2^1139880631 is an apocalyptic number.

1139880631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139880631 is an equidigital number, since it uses as much as digits as its factorization.

1139880631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1139880631 is about 33762.1182836622. The cubic root of 1139880631 is about 1044.6074641166.

It can be divided in two parts, 11398 and 80631, that added together give a palindrome (92029).

The spelling of 1139880631 in words is "one billion, one hundred thirty-nine million, eight hundred eighty thousand, six hundred thirty-one".