1145243664 has 80 divisors (see below), whose sum is σ = 3393354240. Its totient is φ = 369429120.

The previous prime is 1145243621. The next prime is 1145243683. The reversal of 1145243664 is 4663425411.

1145243664 is a `hidden beast` number, since 114 + 52 + 436 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29367 + ... + 56150.

It is an arithmetic number, because the mean of its divisors is an integer number (42416928).

Almost surely, 2^1145243664 is an apocalyptic number.

It is an amenable number.

1145243664 is an abundant number, since it is smaller than the sum of its proper divisors (2248110576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145243664 is a wasteful number, since it uses less digits than its factorization.

1145243664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85565 (or 85553 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1145243664 is about 33841.4489051518. The cubic root of 1145243664 is about 1046.2431620421.

The spelling of 1145243664 in words is "one billion, one hundred forty-five million, two hundred forty-three thousand, six hundred sixty-four".