1145597639 has 6 divisors (see below), whose sum is σ = 1197572376. Its totient is φ = 1095788540.

The previous prime is 1145597633. The next prime is 1145597641. The reversal of 1145597639 is 9367955411.

It is not a de Polignac number, because 1145597639 - 2²⁸ = 877162183 is a prime.

It is a super-3 number, since 3×1145597639³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145597633) 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, 1082267 + ... + 1083324.

It is an arithmetic number, because the mean of its divisors is an integer number (199595396).

Almost surely, 2^1145597639 is an apocalyptic number.

1145597639 is a deficient number, since it is larger than the sum of its proper divisors (51974737).

1145597639 is an equidigital number, since it uses as much as digits as its factorization.

1145597639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165637 (or 2165614 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 50.

The square root of 1145597639 is about 33846.6784042393. The cubic root of 1145597639 is about 1046.3509428245.

The spelling of 1145597639 in words is "one billion, one hundred forty-five million, five hundred ninety-seven thousand, six hundred thirty-nine".