1131958799 has 2 divisors, whose sum is σ = 1131958800. Its totient is φ = 1131958798.

The previous prime is 1131958781. The next prime is 1131958819. The reversal of 1131958799 is 9978591311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131958799 - 2⁸ = 1131958543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131958799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131958739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565979399 + 565979400.

It is an arithmetic number, because the mean of its divisors is an integer number (565979400).

Almost surely, 2^1131958799 is an apocalyptic number.

1131958799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131958799 is an equidigital number, since it uses as much as digits as its factorization.

1131958799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 53.

The square root of 1131958799 is about 33644.5953906419. The cubic root of 1131958799 is about 1042.1819325762.

The spelling of 1131958799 in words is "one billion, one hundred thirty-one million, nine hundred fifty-eight thousand, seven hundred ninety-nine".