1165641567 has 16 divisors (see below), whose sum is σ = 1652457312. Its totient is φ = 728340480.

The previous prime is 1165641563. The next prime is 1165641611. The reversal of 1165641567 is 7651465611.

It is a happy number.

It is not a de Polignac number, because 1165641567 - 2² = 1165641563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165641563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35128 + ... + 59709.

It is an arithmetic number, because the mean of its divisors is an integer number (103278582).

Almost surely, 2^1165641567 is an apocalyptic number.

1165641567 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1165641567 is a deficient number, since it is larger than the sum of its proper divisors (486815745).

1165641567 is a wasteful number, since it uses less digits than its factorization.

1165641567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95098.

The product of its digits is 151200, while the sum is 42.

The square root of 1165641567 is about 34141.4933328933. The cubic root of 1165641567 is about 1052.4181807785.

The spelling of 1165641567 in words is "one billion, one hundred sixty-five million, six hundred forty-one thousand, five hundred sixty-seven".