1139818051 has 2 divisors, whose sum is σ = 1139818052. Its totient is φ = 1139818050.

The previous prime is 1139818019. The next prime is 1139818063. The reversal of 1139818051 is 1508189311.

It is a strong prime.

It is an emirp because it is prime and its reverse (1508189311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139818051 - 2⁵ = 1139818019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1139818051.

It is not a weakly prime, because it can be changed into another prime (1139818651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569909025 + 569909026.

It is an arithmetic number, because the mean of its divisors is an integer number (569909026).

Almost surely, 2^1139818051 is an apocalyptic number.

1139818051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139818051 is an equidigital number, since it uses as much as digits as its factorization.

1139818051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 37.

The square root of 1139818051 is about 33761.1914925999. The cubic root of 1139818051 is about 1044.5883472811.

The spelling of 1139818051 in words is "one billion, one hundred thirty-nine million, eight hundred eighteen thousand, fifty-one".