1318899047 has 2 divisors, whose sum is σ = 1318899048. Its totient is φ = 1318899046.

The previous prime is 1318899037. The next prime is 1318899059. The reversal of 1318899047 is 7409988131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318899047 - 2²⁸ = 1050463591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1318898986 and 1318899004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318899017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659449523 + 659449524.

It is an arithmetic number, because the mean of its divisors is an integer number (659449524).

Almost surely, 2^1318899047 is an apocalyptic number.

1318899047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318899047 is an equidigital number, since it uses as much as digits as its factorization.

1318899047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1318899047 is about 36316.6497215809. The cubic root of 1318899047 is about 1096.6562501923.

The spelling of 1318899047 in words is "one billion, three hundred eighteen million, eight hundred ninety-nine thousand, forty-seven".