2102691013 has 4 divisors (see below), whose sum is σ = 2151590848. Its totient is φ = 2053791180.

The previous prime is 2102691011. The next prime is 2102691061. The reversal of 2102691013 is 3101962012.

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 a cyclic number.

It is not a de Polignac number, because 2102691013 - 2¹ = 2102691011 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 (2102691011) 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, 24449853 + ... + 24449938.

It is an arithmetic number, because the mean of its divisors is an integer number (537897712).

Almost surely, 2^2102691013 is an apocalyptic number.

It is an amenable number.

2102691013 is a deficient number, since it is larger than the sum of its proper divisors (48899835).

2102691013 is an equidigital number, since it uses as much as digits as its factorization.

2102691013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48899834.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2102691013 is about 45855.1089083866. The cubic root of 2102691013 is about 1281.1259243942.

The spelling of 2102691013 in words is "two billion, one hundred two million, six hundred ninety-one thousand, thirteen".