13381982 has 4 divisors (see below), whose sum is σ = 20072976. Its totient is φ = 6690990.

The previous prime is 13381939. The next prime is 13381993. The reversal of 13381982 is 28918331.

13381982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×13381982³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345494 + ... + 3345497.

It is an arithmetic number, because the mean of its divisors is an integer number (5018244).

Almost surely, 2^13381982 is an apocalyptic number.

13381982 is a deficient number, since it is larger than the sum of its proper divisors (6690994).

13381982 is an equidigital number, since it uses as much as digits as its factorization.

13381982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690993.

The product of its digits is 10368, while the sum is 35.

The square root of 13381982 is about 3658.1391444285. The cubic root of 13381982 is about 237.4142671168.

The spelling of 13381982 in words is "thirteen million, three hundred eighty-one thousand, nine hundred eighty-two".