1156455266 has 16 divisors (see below), whose sum is σ = 1782307800. Its totient is φ = 562437120.

The previous prime is 1156455259. The next prime is 1156455281. The reversal of 1156455266 is 6625546511.

It can be written as a sum of positive squares in 4 ways, for example, as 773118025 + 383337241 = 27805^2 + 19579^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6710 + ... + 48558.

Almost surely, 2^1156455266 is an apocalyptic number.

1156455266 is a deficient number, since it is larger than the sum of its proper divisors (625852534).

1156455266 is a wasteful number, since it uses less digits than its factorization.

1156455266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42229.

The product of its digits is 216000, while the sum is 41.

The square root of 1156455266 is about 34006.6944291856. The cubic root of 1156455266 is about 1049.6462197396.

The spelling of 1156455266 in words is "one billion, one hundred fifty-six million, four hundred fifty-five thousand, two hundred sixty-six".