1215965495 has 16 divisors (see below), whose sum is σ = 1559742912. Its totient is φ = 907779840.

The previous prime is 1215965489. The next prime is 1215965501. The reversal of 1215965495 is 5945695121.

It is an interprime number because it is at equal distance from previous prime (1215965489) and next prime (1215965501).

It is not a de Polignac number, because 1215965495 - 2⁴ = 1215965479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124232 + ... + 133661.

It is an arithmetic number, because the mean of its divisors is an integer number (97483932).

Almost surely, 2^1215965495 is an apocalyptic number.

1215965495 is a deficient number, since it is larger than the sum of its proper divisors (343777417).

1215965495 is a wasteful number, since it uses less digits than its factorization.

1215965495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257962.

The product of its digits is 486000, while the sum is 47.

The square root of 1215965495 is about 34870.6967954470. The cubic root of 1215965495 is about 1067.3505636478.

The spelling of 1215965495 in words is "one billion, two hundred fifteen million, nine hundred sixty-five thousand, four hundred ninety-five".