1156402215 has 12 divisors (see below), whose sum is σ = 2004430584. Its totient is φ = 616747824.

The previous prime is 1156402213. The next prime is 1156402229. The reversal of 1156402215 is 5122046511.

1156402215 is a `hidden beast` number, since 1 + 1 + 5 + 640 + 2 + 2 + 15 = 666.

It is not a de Polignac number, because 1156402215 - 2¹ = 1156402213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156402213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12848869 + ... + 12848958.

It is an arithmetic number, because the mean of its divisors is an integer number (167035882).

Almost surely, 2^1156402215 is an apocalyptic number.

1156402215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1156402215 is a deficient number, since it is larger than the sum of its proper divisors (848028369).

1156402215 is a wasteful number, since it uses less digits than its factorization.

1156402215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25697838 (or 25697835 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1156402215 is about 34005.9144120549. The cubic root of 1156402215 is about 1049.6301690732.

Adding to 1156402215 its reverse (5122046511), we get a palindrome (6278448726).

It can be divided in two parts, 115640 and 2215, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 1156402215 in words is "one billion, one hundred fifty-six million, four hundred two thousand, two hundred fifteen".