1162645791 has 24 divisors (see below), whose sum is σ = 1630581120. Its totient is φ = 735490800.

The previous prime is 1162645753. The next prime is 1162645807. The reversal of 1162645791 is 1975462611.

It is not a de Polignac number, because 1162645791 - 2⁶ = 1162645727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162641791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572900 + ... + 1573638.

It is an arithmetic number, because the mean of its divisors is an integer number (67940880).

Almost surely, 2^1162645791 is an apocalyptic number.

1162645791 is a deficient number, since it is larger than the sum of its proper divisors (467935329).

1162645791 is an equidigital number, since it uses as much as digits as its factorization.

1162645791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 916 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 1162645791 is about 34097.5921583915. The cubic root of 1162645791 is about 1051.5158124872.

It can be divided in two parts, 1162 and 645791, that added together give a triangular number (646953 = T₁₁₃₇).

The spelling of 1162645791 in words is "one billion, one hundred sixty-two million, six hundred forty-five thousand, seven hundred ninety-one".