13851982 has 16 divisors (see below), whose sum is σ = 21248640. Its totient is φ = 6770808.

The previous prime is 13851979. The next prime is 13851989. The reversal of 13851982 is 28915831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13851989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22069 + ... + 22687.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^13851982 is an apocalyptic number.

13851982 is a deficient number, since it is larger than the sum of its proper divisors (7396658).

13851982 is a wasteful number, since it uses less digits than its factorization.

13851982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855.

The product of its digits is 17280, while the sum is 37.

The square root of 13851982 is about 3721.8250899256. The cubic root of 13851982 is about 240.1618237337.

It can be divided in two parts, 138519 and 82, that added together give a triangular number (138601 = T₅₂₆).

The spelling of 13851982 in words is "thirteen million, eight hundred fifty-one thousand, nine hundred eighty-two".