1818007057 has 2 divisors, whose sum is σ = 1818007058. Its totient is φ = 1818007056.

The previous prime is 1818007049. The next prime is 1818007109. The reversal of 1818007057 is 7507008181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951352336 + 866654721 = 30844^2 + 29439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818007057 - 2³ = 1818007049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1818007027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909003528 + 909003529.

It is an arithmetic number, because the mean of its divisors is an integer number (909003529).

Almost surely, 2^1818007057 is an apocalyptic number.

It is an amenable number.

1818007057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818007057 is an equidigital number, since it uses as much as digits as its factorization.

1818007057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 37.

The square root of 1818007057 is about 42638.0939653733. The cubic root of 1818007057 is about 1220.4833382274.

The spelling of 1818007057 in words is "one billion, eight hundred eighteen million, seven thousand, fifty-seven".