1145231637 has 32 divisors (see below), whose sum is σ = 1694146560. Its totient is φ = 682344000.

The previous prime is 1145231623. The next prime is 1145231641. The reversal of 1145231637 is 7361325411.

It is not a de Polignac number, because 1145231637 - 2⁷ = 1145231509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1145231598 and 1145231607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145233637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705687 + ... + 707307.

It is an arithmetic number, because the mean of its divisors is an integer number (52942080).

Almost surely, 2^1145231637 is an apocalyptic number.

It is an amenable number.

1145231637 is a deficient number, since it is larger than the sum of its proper divisors (548914923).

1145231637 is a wasteful number, since it uses less digits than its factorization.

1145231637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985.

The product of its digits is 15120, while the sum is 33.

The square root of 1145231637 is about 33841.2712083929. The cubic root of 1145231637 is about 1046.2394995870.

The spelling of 1145231637 in words is "one billion, one hundred forty-five million, two hundred thirty-one thousand, six hundred thirty-seven".