1165427407 has 4 divisors (see below), whose sum is σ = 1181392240. Its totient is φ = 1149462576.

The previous prime is 1165427399. The next prime is 1165427467. The reversal of 1165427407 is 7047245611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1165427407 - 2³ = 1165427399 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 (1165427467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7982307 + ... + 7982452.

It is an arithmetic number, because the mean of its divisors is an integer number (295348060).

Almost surely, 2^1165427407 is an apocalyptic number.

1165427407 is a deficient number, since it is larger than the sum of its proper divisors (15964833).

1165427407 is an equidigital number, since it uses as much as digits as its factorization.

1165427407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964832.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1165427407 is about 34138.3568292324. The cubic root of 1165427407 is about 1052.3537242341.

The spelling of 1165427407 in words is "one billion, one hundred sixty-five million, four hundred twenty-seven thousand, four hundred seven".