2011993013 has 2 divisors, whose sum is σ = 2011993014. Its totient is φ = 2011993012.

The previous prime is 2011992991. The next prime is 2011993021. The reversal of 2011993013 is 3103991102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1875149809 + 136843204 = 43303^2 + 11698^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011993013 - 2⁶ = 2011992949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011993063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005996506 + 1005996507.

It is an arithmetic number, because the mean of its divisors is an integer number (1005996507).

Almost surely, 2^2011993013 is an apocalyptic number.

It is an amenable number.

2011993013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011993013 is an equidigital number, since it uses as much as digits as its factorization.

2011993013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 2011993013 is about 44855.2451002110. The cubic root of 2011993013 is about 1262.4344077023.

The spelling of 2011993013 in words is "two billion, eleven million, nine hundred ninety-three thousand, thirteen".