1145724569 has 8 divisors (see below), whose sum is σ = 1250242560. Its totient is φ = 1041266800.

The previous prime is 1145724563. The next prime is 1145724581. The reversal of 1145724569 is 9654275411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145724569 - 2⁸ = 1145724313 is a prime.

It is a super-2 number, since 2×1145724569² = 2625369576020471522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145724563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30824 + ... + 56934.

It is an arithmetic number, because the mean of its divisors is an integer number (156280320).

Almost surely, 2^1145724569 is an apocalyptic number.

It is an amenable number.

1145724569 is a deficient number, since it is larger than the sum of its proper divisors (104517991).

1145724569 is a wasteful number, since it uses less digits than its factorization.

1145724569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30111.

The product of its digits is 302400, while the sum is 44.

The square root of 1145724569 is about 33848.5534255158. The cubic root of 1145724569 is about 1046.3895859501.

The spelling of 1145724569 in words is "one billion, one hundred forty-five million, seven hundred twenty-four thousand, five hundred sixty-nine".