1167656481 has 6 divisors (see below), whose sum is σ = 1686614930. Its totient is φ = 778437648.

The previous prime is 1167656473. The next prime is 1167656489. The reversal of 1167656481 is 1846567611.

1167656481 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 6 + 564 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (1167656473) and next prime (1167656489).

It can be written as a sum of positive squares in only one way, i.e., 851705856 + 315950625 = 29184^2 + 17775^2 .

It is not a de Polignac number, because 1167656481 - 2³ = 1167656473 is a prime.

It is a super-2 number, since 2×1167656481² = 2726843315242606722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1167656489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64869796 + ... + 64869813.

Almost surely, 2^1167656481 is an apocalyptic number.

It is an amenable number.

1167656481 is a deficient number, since it is larger than the sum of its proper divisors (518958449).

1167656481 is a wasteful number, since it uses less digits than its factorization.

1167656481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129739615 (or 129739612 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1167656481 is about 34170.9888794574. The cubic root of 1167656481 is about 1053.0242308475.

The spelling of 1167656481 in words is "one billion, one hundred sixty-seven million, six hundred fifty-six thousand, four hundred eighty-one".