1156023115 has 16 divisors (see below), whose sum is σ = 1494674496. Its totient is φ = 853257600.

The previous prime is 1156023097. The next prime is 1156023133. The reversal of 1156023115 is 5113206511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1156023097) and next prime (1156023133).

It is not a de Polignac number, because 1156023115 - 2⁵ = 1156023083 is a prime.

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 1156023115.

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, 203970 + ... + 209560.

It is an arithmetic number, because the mean of its divisors is an integer number (93417156).

Almost surely, 2^1156023115 is an apocalyptic number.

1156023115 is a deficient number, since it is larger than the sum of its proper divisors (338651381).

1156023115 is a wasteful number, since it uses less digits than its factorization.

1156023115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1156023115 is about 34000.3399247713. The cubic root of 1156023115 is about 1049.5154574610.

Adding to 1156023115 its reverse (5113206511), we get a palindrome (6269229626).

The spelling of 1156023115 in words is "one billion, one hundred fifty-six million, twenty-three thousand, one hundred fifteen".