1165444641 has 12 divisors (see below), whose sum is σ = 1711953360. Its totient is φ = 763793880.

The previous prime is 1165444627. The next prime is 1165444669. The reversal of 1165444641 is 1464445611.

1165444641 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 4 + 4 + 4 + 641 = 666.

It is not a de Polignac number, because 1165444641 - 2¹⁸ = 1165182497 is a prime.

It is a super-2 number, since 2×1165444641² = 2716522422471237762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1165444596 and 1165444605.

It is not an unprimeable number, because it can be changed into a prime (1165444601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096875 + ... + 1097936.

It is an arithmetic number, because the mean of its divisors is an integer number (142662780).

Almost surely, 2^1165444641 is an apocalyptic number.

It is an amenable number.

1165444641 is a deficient number, since it is larger than the sum of its proper divisors (546508719).

1165444641 is a wasteful number, since it uses less digits than its factorization.

1165444641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194876 (or 2194873 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1165444641 is about 34138.6092423227. The cubic root of 1165444641 is about 1052.3589115084.

The spelling of 1165444641 in words is "one billion, one hundred sixty-five million, four hundred forty-four thousand, six hundred forty-one".