1139551741 has 2 divisors, whose sum is σ = 1139551742. Its totient is φ = 1139551740.

The previous prime is 1139551739. The next prime is 1139551747. The reversal of 1139551741 is 1471559311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 826792516 + 312759225 = 28754^2 + 17685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139551741 - 2¹ = 1139551739 is a prime.

It is a super-2 number, since 2×1139551741² = 2597156340832262162, which contains 22 as substring.

Together with 1139551739, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1139551741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139551747) 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 as a sum of consecutive naturals, namely, 569775870 + 569775871.

It is an arithmetic number, because the mean of its divisors is an integer number (569775871).

Almost surely, 2^1139551741 is an apocalyptic number.

It is an amenable number.

1139551741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139551741 is an equidigital number, since it uses as much as digits as its factorization.

1139551741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 37.

The square root of 1139551741 is about 33757.2472367046. The cubic root of 1139551741 is about 1044.5069875148.

It can be divided in two parts, 11395 and 51741, that added together give a palindrome (63136).

The spelling of 1139551741 in words is "one billion, one hundred thirty-nine million, five hundred fifty-one thousand, seven hundred forty-one".