1163245645 has 16 divisors (see below), whose sum is σ = 1505206080. Its totient is φ = 860112000.

The previous prime is 1163245639. The next prime is 1163245663. The reversal of 1163245645 is 5465423611.

It is not a de Polignac number, because 1163245645 - 2¹⁵ = 1163212877 is a prime.

It is a super-3 number, since 3×1163245645³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145431 + ... + 153220.

It is an arithmetic number, because the mean of its divisors is an integer number (94075380).

Almost surely, 2^1163245645 is an apocalyptic number.

It is an amenable number.

1163245645 is a deficient number, since it is larger than the sum of its proper divisors (341960435).

1163245645 is a wasteful number, since it uses less digits than its factorization.

1163245645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298716.

The product of its digits is 86400, while the sum is 37.

The square root of 1163245645 is about 34106.3871584195. The cubic root of 1163245645 is about 1051.6966206419.

The spelling of 1163245645 in words is "one billion, one hundred sixty-three million, two hundred forty-five thousand, six hundred forty-five".