1512999979 has 2 divisors, whose sum is σ = 1512999980. Its totient is φ = 1512999978.

The previous prime is 1512999973. The next prime is 1513000031. The reversal of 1512999979 is 9799992151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1512999979 - 2⁵ = 1512999947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1512999973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756499989 + 756499990.

It is an arithmetic number, because the mean of its divisors is an integer number (756499990).

Almost surely, 2^1512999979 is an apocalyptic number.

1512999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512999979 is an equidigital number, since it uses as much as digits as its factorization.

1512999979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4133430, while the sum is 61.

The square root of 1512999979 is about 38897.3004076118. The cubic root of 1512999979 is about 1148.0116818145.

The spelling of 1512999979 in words is "one billion, five hundred twelve million, nine hundred ninety-nine thousand, nine hundred seventy-nine".