1161392647 has 2 divisors, whose sum is σ = 1161392648. Its totient is φ = 1161392646.

The previous prime is 1161392629. The next prime is 1161392699. The reversal of 1161392647 is 7462931611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161392647 - 2²⁷ = 1027174919 is a prime.

It is a super-3 number, since 3×1161392647³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161392047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580696323 + 580696324.

It is an arithmetic number, because the mean of its divisors is an integer number (580696324).

Almost surely, 2^1161392647 is an apocalyptic number.

1161392647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161392647 is an equidigital number, since it uses as much as digits as its factorization.

1161392647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 1161392647 is about 34079.2113611803. The cubic root of 1161392647 is about 1051.1378887183.

The spelling of 1161392647 in words is "one billion, one hundred sixty-one million, three hundred ninety-two thousand, six hundred forty-seven".