2043965013 has 4 divisors (see below), whose sum is σ = 2725286688. Its totient is φ = 1362643340.

The previous prime is 2043965009. The next prime is 2043965017. The reversal of 2043965013 is 3105693402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2043965009) and next prime (2043965017).

It is a cyclic number.

It is not a de Polignac number, because 2043965013 - 2² = 2043965009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043965017) 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, 340660833 + ... + 340660838.

It is an arithmetic number, because the mean of its divisors is an integer number (681321672).

Almost surely, 2^2043965013 is an apocalyptic number.

It is an amenable number.

2043965013 is a deficient number, since it is larger than the sum of its proper divisors (681321675).

2043965013 is an equidigital number, since it uses as much as digits as its factorization.

2043965013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681321674.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 2043965013 is about 45210.2312867342. The cubic root of 2043965013 is about 1269.0862903106.

The spelling of 2043965013 in words is "two billion, forty-three million, nine hundred sixty-five thousand, thirteen".