1164640445 has 8 divisors (see below), whose sum is σ = 1399300920. Its totient is φ = 930557440.

The previous prime is 1164640441. The next prime is 1164640447. The reversal of 1164640445 is 5440464611.

It can be written as a sum of positive squares in 4 ways, for example, as 696220996 + 468419449 = 26386^2 + 21643^2 .

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

It is not a de Polignac number, because 1164640445 - 2² = 1164640441 is a prime.

It is a super-2 number, since 2×1164640445² = 2712774732259596050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164640441) 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, 139916 + ... + 148005.

It is an arithmetic number, because the mean of its divisors is an integer number (174912615).

Almost surely, 2^1164640445 is an apocalyptic number.

It is an amenable number.

1164640445 is a deficient number, since it is larger than the sum of its proper divisors (234660475).

1164640445 is an equidigital number, since it uses as much as digits as its factorization.

1164640445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288735.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1164640445 is about 34126.8288154642. The cubic root of 1164640445 is about 1052.1168014641.

The spelling of 1164640445 in words is "one billion, one hundred sixty-four million, six hundred forty thousand, four hundred forty-five".