1156455513 has 6 divisors (see below), whose sum is σ = 1670435754. Its totient is φ = 770970336.

The previous prime is 1156455493. The next prime is 1156455551. The reversal of 1156455513 is 3155546511.

1156455513 is a `hidden beast` number, since 1 + 1 + 5 + 645 + 5 + 5 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 949440969 + 207014544 = 30813^2 + 14388^2 .

It is not a de Polignac number, because 1156455513 - 2¹⁷ = 1156324441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1156455593) 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, 64247520 + ... + 64247537.

It is an arithmetic number, because the mean of its divisors is an integer number (278405959).

Almost surely, 2^1156455513 is an apocalyptic number.

It is an amenable number.

1156455513 is a deficient number, since it is larger than the sum of its proper divisors (513980241).

1156455513 is a wasteful number, since it uses less digits than its factorization.

1156455513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128495063 (or 128495060 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 1156455513 is about 34006.6980608233. The cubic root of 1156455513 is about 1049.6462944687.

The spelling of 1156455513 in words is "one billion, one hundred fifty-six million, four hundred fifty-five thousand, five hundred thirteen".