1818196979 has 2 divisors, whose sum is σ = 1818196980. Its totient is φ = 1818196978.

The previous prime is 1818196973. The next prime is 1818196987. The reversal of 1818196979 is 9796918181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1818196979 - 2¹⁶ = 1818131443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1818196973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909098489 + 909098490.

It is an arithmetic number, because the mean of its divisors is an integer number (909098490).

Almost surely, 2^1818196979 is an apocalyptic number.

1818196979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818196979 is an equidigital number, since it uses as much as digits as its factorization.

1818196979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 59.

The square root of 1818196979 is about 42640.3210471028. The cubic root of 1818196979 is about 1220.5258368826.

The spelling of 1818196979 in words is "one billion, eight hundred eighteen million, one hundred ninety-six thousand, nine hundred seventy-nine".