1145163639 has 16 divisors (see below), whose sum is σ = 1626059232. Its totient is φ = 714375168.

The previous prime is 1145163637. The next prime is 1145163647. The reversal of 1145163639 is 9363615411.

It is not a de Polignac number, because 1145163639 - 2¹ = 1145163637 is a prime.

It is a super-2 number, since 2×1145163639² = 2622799520175444642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145163597 and 1145163606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145163631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56074 + ... + 73719.

It is an arithmetic number, because the mean of its divisors is an integer number (101628702).

Almost surely, 2^1145163639 is an apocalyptic number.

1145163639 is a deficient number, since it is larger than the sum of its proper divisors (480895593).

1145163639 is a wasteful number, since it uses less digits than its factorization.

1145163639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129986.

The product of its digits is 58320, while the sum is 39.

The square root of 1145163639 is about 33840.2665326383. The cubic root of 1145163639 is about 1046.2187923929.

The spelling of 1145163639 in words is "one billion, one hundred forty-five million, one hundred sixty-three thousand, six hundred thirty-nine".