1165007405 has 16 divisors (see below), whose sum is σ = 1425610368. Its totient is φ = 913752000.

The previous prime is 1165007387. The next prime is 1165007407. The reversal of 1165007405 is 5047005611.

It is not a de Polignac number, because 1165007405 - 2⁸ = 1165007149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165007407) 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, 55190 + ... + 73320.

It is an arithmetic number, because the mean of its divisors is an integer number (89100648).

Almost surely, 2^1165007405 is an apocalyptic number.

It is an amenable number.

1165007405 is a deficient number, since it is larger than the sum of its proper divisors (260602963).

1165007405 is a wasteful number, since it uses less digits than its factorization.

1165007405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18388.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1165007405 is about 34132.2048071905. The cubic root of 1165007405 is about 1052.2272917132.

The spelling of 1165007405 in words is "one billion, one hundred sixty-five million, seven thousand, four hundred five".