1139958541 has 2 divisors, whose sum is σ = 1139958542. Its totient is φ = 1139958540.

The previous prime is 1139958481. The next prime is 1139958551. The reversal of 1139958541 is 1458599311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916575625 + 223382916 = 30275^2 + 14946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139958541 - 2²⁵ = 1106404109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1139958491 and 1139958500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139958551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569979270 + 569979271.

It is an arithmetic number, because the mean of its divisors is an integer number (569979271).

Almost surely, 2^1139958541 is an apocalyptic number.

It is an amenable number.

1139958541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139958541 is an equidigital number, since it uses as much as digits as its factorization.

1139958541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 46.

The square root of 1139958541 is about 33763.2720718831. The cubic root of 1139958541 is about 1044.6312629575.

The spelling of 1139958541 in words is "one billion, one hundred thirty-nine million, nine hundred fifty-eight thousand, five hundred forty-one".