1145652138 has 12 divisors (see below), whose sum is σ = 2482246338. Its totient is φ = 381884040.

The previous prime is 1145652133. The next prime is 1145652143. The reversal of 1145652138 is 8312565411.

It is an interprime number because it is at equal distance from previous prime (1145652133) and next prime (1145652143).

It can be written as a sum of positive squares in only one way, i.e., 637916049 + 507736089 = 25257^2 + 22533^2 .

It is not an unprimeable number, because it can be changed into a prime (1145652133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31823653 + ... + 31823688.

Almost surely, 2^1145652138 is an apocalyptic number.

1145652138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1145652138 is an abundant number, since it is smaller than the sum of its proper divisors (1336594200).

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

1145652138 is a wasteful number, since it uses less digits than its factorization.

1145652138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63647349 (or 63647346 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1145652138 is about 33847.4834810507. The cubic root of 1145652138 is about 1046.3675350886.

The spelling of 1145652138 in words is "one billion, one hundred forty-five million, six hundred fifty-two thousand, one hundred thirty-eight".