13001994 has 12 divisors (see below), whose sum is σ = 28171026. Its totient is φ = 4333992.

The previous prime is 13001993. The next prime is 13002019. The reversal of 13001994 is 49910031.

It can be written as a sum of positive squares in only one way, i.e., 12852225 + 149769 = 3585^2 + 387^2 .

It is a super-3 number, since 3×13001994³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13001993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361149 + ... + 361184.

Almost surely, 2^13001994 is an apocalyptic number.

13001994 is an abundant number, since it is smaller than the sum of its proper divisors (15169032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001994 is a wasteful number, since it uses less digits than its factorization.

13001994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722341 (or 722338 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13001994 is about 3605.8277829092. The cubic root of 13001994 is about 235.1454901097.

The spelling of 13001994 in words is "thirteen million, one thousand, nine hundred ninety-four".