1215403159 has 2 divisors, whose sum is σ = 1215403160. Its totient is φ = 1215403158.

The previous prime is 1215403129. The next prime is 1215403171. The reversal of 1215403159 is 9513045121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215403159 - 2¹³ = 1215394967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1215403159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215403129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607701579 + 607701580.

It is an arithmetic number, because the mean of its divisors is an integer number (607701580).

Almost surely, 2^1215403159 is an apocalyptic number.

1215403159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215403159 is an equidigital number, since it uses as much as digits as its factorization.

1215403159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1215403159 is about 34862.6327032254. The cubic root of 1215403159 is about 1067.1860024555.

The spelling of 1215403159 in words is "one billion, two hundred fifteen million, four hundred three thousand, one hundred fifty-nine".