1318042819 has 2 divisors, whose sum is σ = 1318042820. Its totient is φ = 1318042818.

The previous prime is 1318042811. The next prime is 1318042879. The reversal of 1318042819 is 9182408131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318042819 - 2³ = 1318042811 is a prime.

It is a super-2 number, since 2×1318042819² = 3474473745434933522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1318042811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659021409 + 659021410.

It is an arithmetic number, because the mean of its divisors is an integer number (659021410).

Almost surely, 2^1318042819 is an apocalyptic number.

1318042819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318042819 is an equidigital number, since it uses as much as digits as its factorization.

1318042819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1318042819 is about 36304.8594405763. The cubic root of 1318042819 is about 1096.4188827557.

The spelling of 1318042819 in words is "one billion, three hundred eighteen million, forty-two thousand, eight hundred nineteen".