1156813087 has 2 divisors, whose sum is σ = 1156813088. Its totient is φ = 1156813086.

The previous prime is 1156813061. The next prime is 1156813171. The reversal of 1156813087 is 7803186511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1156813087 - 2¹⁵ = 1156780319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156813027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578406543 + 578406544.

It is an arithmetic number, because the mean of its divisors is an integer number (578406544).

Almost surely, 2^1156813087 is an apocalyptic number.

1156813087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156813087 is an equidigital number, since it uses as much as digits as its factorization.

1156813087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1156813087 is about 34011.9550599491. The cubic root of 1156813087 is about 1049.7544662468.

Adding to 1156813087 its reverse (7803186511), we get a palindrome (8959999598).

The spelling of 1156813087 in words is "one billion, one hundred fifty-six million, eight hundred thirteen thousand, eighty-seven".