1999999902013 has 4 divisors (see below), whose sum is σ = 2000269560220. Its totient is φ = 1999730243808.

The previous prime is 1999999902011. The next prime is 1999999902067. The reversal of 1999999902013 is 3102099999991.

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 1110332160729 + 889667741284 = 1053723^2 + 943222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1999999902013 - 2¹ = 1999999902011 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 (1999999902011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134817978 + ... + 134832811.

It is an arithmetic number, because the mean of its divisors is an integer number (500067390055).

Almost surely, 2^{1999999902013} is an apocalyptic number.

It is an amenable number.

1999999902013 is a deficient number, since it is larger than the sum of its proper divisors (269658207).

1999999902013 is an equidigital number, since it uses as much as digits as its factorization.

1999999902013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269658206.

The product of its (nonzero) digits is 28697814, while the sum is 70.

The spelling of 1999999902013 in words is "one trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred two thousand, thirteen".