1165426213 has 8 divisors (see below), whose sum is σ = 1332536832. Its totient is φ = 998470896.

The previous prime is 1165426133. The next prime is 1165426231. The reversal of 1165426213 is 3126245611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1165426213 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 (1165426013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22270 + ... + 53167.

It is an arithmetic number, because the mean of its divisors is an integer number (166567104).

Almost surely, 2^1165426213 is an apocalyptic number.

It is an amenable number.

1165426213 is a deficient number, since it is larger than the sum of its proper divisors (167110619).

1165426213 is an equidigital number, since it uses as much as digits as its factorization.

1165426213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77651.

The product of its digits is 8640, while the sum is 31.

The square root of 1165426213 is about 34138.3393415673. The cubic root of 1165426213 is about 1052.3533648493.

The spelling of 1165426213 in words is "one billion, one hundred sixty-five million, four hundred twenty-six thousand, two hundred thirteen".