1156118947 has 2 divisors, whose sum is σ = 1156118948. Its totient is φ = 1156118946.

The previous prime is 1156118927. The next prime is 1156118987. The reversal of 1156118947 is 7498116511.

It is a weak prime.

It is an emirp because it is prime and its reverse (7498116511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1156118947 - 2⁷ = 1156118819 is a prime.

It is a super-2 number, since 2×1156118947² = 2673222039224777618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1156118917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578059473 + 578059474.

It is an arithmetic number, because the mean of its divisors is an integer number (578059474).

Almost surely, 2^1156118947 is an apocalyptic number.

1156118947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156118947 is an equidigital number, since it uses as much as digits as its factorization.

1156118947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 43.

The square root of 1156118947 is about 34001.7491755939. The cubic root of 1156118947 is about 1049.5444575692.

The spelling of 1156118947 in words is "one billion, one hundred fifty-six million, one hundred eighteen thousand, nine hundred forty-seven".