1161613471 has 2 divisors, whose sum is σ = 1161613472. Its totient is φ = 1161613470.

The previous prime is 1161613441. The next prime is 1161613499. The reversal of 1161613471 is 1743161611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161613471 - 2²⁵ = 1128059039 is a prime.

It is a super-3 number, since 3×1161613471³ (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 (1161613421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580806735 + 580806736.

It is an arithmetic number, because the mean of its divisors is an integer number (580806736).

Almost surely, 2^1161613471 is an apocalyptic number.

1161613471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161613471 is an equidigital number, since it uses as much as digits as its factorization.

1161613471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 1161613471 is about 34082.4510708957. The cubic root of 1161613471 is about 1051.2045046511.

It can be divided in two parts, 1161613 and 471, that added together give a square (1162084 = 1078²).

The spelling of 1161613471 in words is "one billion, one hundred sixty-one million, six hundred thirteen thousand, four hundred seventy-one".