1018158459971 has 2 divisors, whose sum is σ = 1018158459972. Its totient is φ = 1018158459970.

The previous prime is 1018158459911. The next prime is 1018158459991. The reversal of 1018158459971 is 1799548518101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1018158459971 - 2⁶ = 1018158459907 is a prime.

It is a super-2 number, since 2×1018158459971² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1018158459971.

It is not a weakly prime, because it can be changed into another prime (1018158459911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509079229985 + 509079229986.

It is an arithmetic number, because the mean of its divisors is an integer number (509079229986).

Almost surely, 2^{1018158459971} is an apocalyptic number.

1018158459971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018158459971 is an equidigital number, since it uses as much as digits as its factorization.

1018158459971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 59.

The spelling of 1018158459971 in words is "one trillion, eighteen billion, one hundred fifty-eight million, four hundred fifty-nine thousand, nine hundred seventy-one".