318877161049 has 2 divisors, whose sum is σ = 318877161050. Its totient is φ = 318877161048.

The previous prime is 318877160999. The next prime is 318877161121. The reversal of 318877161049 is 940161778813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229950939024 + 88926222025 = 479532^2 + 298205^2 .

It is a cyclic number.

It is not a de Polignac number, because 318877161049 - 2¹⁵ = 318877128281 is a prime.

It is not a weakly prime, because it can be changed into another prime (318877161149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438580524 + 159438580525.

It is an arithmetic number, because the mean of its divisors is an integer number (159438580525).

Almost surely, 2^318877161049 is an apocalyptic number.

It is an amenable number.

318877161049 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877161049 is an equidigital number, since it uses as much as digits as its factorization.

318877161049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 318877161049 in words is "three hundred eighteen billion, eight hundred seventy-seven million, one hundred sixty-one thousand, forty-nine".