1241145613 has 4 divisors (see below), whose sum is σ = 1252532380. Its totient is φ = 1229758848.

The previous prime is 1241145601. The next prime is 1241145641. The reversal of 1241145613 is 3165411421.

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 920090889 + 321054724 = 30333^2 + 17918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241145613 - 2²⁵ = 1207591181 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 (1241145643) 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, 5693220 + ... + 5693437.

It is an arithmetic number, because the mean of its divisors is an integer number (313133095).

Almost surely, 2^1241145613 is an apocalyptic number.

It is an amenable number.

1241145613 is a deficient number, since it is larger than the sum of its proper divisors (11386767).

1241145613 is a wasteful number, since it uses less digits than its factorization.

1241145613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386766.

The product of its digits is 2880, while the sum is 28.

The square root of 1241145613 is about 35229.8965794678. The cubic root of 1241145613 is about 1074.6678225157.

The spelling of 1241145613 in words is "one billion, two hundred forty-one million, one hundred forty-five thousand, six hundred thirteen".