1156434065 has 16 divisors (see below), whose sum is σ = 1403707968. Its totient is φ = 914527296.

The previous prime is 1156434023. The next prime is 1156434077. The reversal of 1156434065 is 5604346511.

It is a cyclic number.

It is not a de Polignac number, because 1156434065 - 2²⁰ = 1155385489 is a prime.

It is a Duffinian 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, 277739 + ... + 281871.

It is an arithmetic number, because the mean of its divisors is an integer number (87731748).

Almost surely, 2^1156434065 is an apocalyptic number.

It is an amenable number.

1156434065 is a deficient number, since it is larger than the sum of its proper divisors (247273903).

1156434065 is a wasteful number, since it uses less digits than its factorization.

1156434065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1156434065 is about 34006.3827097208. The cubic root of 1156434065 is about 1049.6398054014.

The spelling of 1156434065 in words is "one billion, one hundred fifty-six million, four hundred thirty-four thousand, sixty-five".