1145013641 has 4 divisors (see below), whose sum is σ = 1184496900. Its totient is φ = 1105530384.

The previous prime is 1145013637. The next prime is 1145013659. The reversal of 1145013641 is 1463105411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 459673600 + 685340041 = 21440^2 + 26179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145013641 - 2² = 1145013637 is a prime.

It is a super-2 number, since 2×1145013641² = 2622112476152153762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145013641.

It is not an unprimeable number, because it can be changed into a prime (1145013691) 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, 19741586 + ... + 19741643.

It is an arithmetic number, because the mean of its divisors is an integer number (296124225).

Almost surely, 2^1145013641 is an apocalyptic number.

It is an amenable number.

1145013641 is a deficient number, since it is larger than the sum of its proper divisors (39483259).

1145013641 is an equidigital number, since it uses as much as digits as its factorization.

1145013641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39483258.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1145013641 is about 33838.0501950098. The cubic root of 1145013641 is about 1046.1731111256.

The spelling of 1145013641 in words is "one billion, one hundred forty-five million, thirteen thousand, six hundred forty-one".