1215159167 has 6 divisors (see below), whose sum is σ = 1290844128. Its totient is φ = 1143678944.

The previous prime is 1215159163. The next prime is 1215159191. The reversal of 1215159167 is 7619515121.

It is not a de Polignac number, because 1215159167 - 2² = 1215159163 is a prime.

It is a super-2 number, since 2×1215159167² = 2953223602288267778, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215159167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215159163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2102063 + ... + 2102640.

It is an arithmetic number, because the mean of its divisors is an integer number (215140688).

Almost surely, 2^1215159167 is an apocalyptic number.

1215159167 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1215159167 is a deficient number, since it is larger than the sum of its proper divisors (75684961).

1215159167 is an equidigital number, since it uses as much as digits as its factorization.

1215159167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204737 (or 4204720 counting only the distinct ones).

The product of its digits is 18900, while the sum is 38.

The square root of 1215159167 is about 34859.1331934688. The cubic root of 1215159167 is about 1067.1145852002.

The spelling of 1215159167 in words is "one billion, two hundred fifteen million, one hundred fifty-nine thousand, one hundred sixty-seven".