1518582979 has 2 divisors, whose sum is σ = 1518582980. Its totient is φ = 1518582978.

The previous prime is 1518582959. The next prime is 1518583007. The reversal of 1518582979 is 9792858151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1518582979 - 2¹⁹ = 1518058691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1518582929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759291489 + 759291490.

It is an arithmetic number, because the mean of its divisors is an integer number (759291490).

Almost surely, 2^1518582979 is an apocalyptic number.

1518582979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518582979 is an equidigital number, since it uses as much as digits as its factorization.

1518582979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 55.

The square root of 1518582979 is about 38969.0002309528. Note that the first 3 decimals coincide. The cubic root of 1518582979 is about 1149.4220104966.

The spelling of 1518582979 in words is "one billion, five hundred eighteen million, five hundred eighty-two thousand, nine hundred seventy-nine".