1215148579 has 2 divisors, whose sum is σ = 1215148580. Its totient is φ = 1215148578.

The previous prime is 1215148541. The next prime is 1215148607. The reversal of 1215148579 is 9758415121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215148579 - 2¹⁹ = 1214624291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1215148079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607574289 + 607574290.

It is an arithmetic number, because the mean of its divisors is an integer number (607574290).

Almost surely, 2^1215148579 is an apocalyptic number.

1215148579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215148579 is an equidigital number, since it uses as much as digits as its factorization.

1215148579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 43.

The square root of 1215148579 is about 34858.9813247605. The cubic root of 1215148579 is about 1067.1114858416. Note that the first 3 decimals are identical.

The spelling of 1215148579 in words is "one billion, two hundred fifteen million, one hundred forty-eight thousand, five hundred seventy-nine".