13963818 has 16 divisors (see below), whose sum is σ = 30466656. Its totient is φ = 4231440.

The previous prime is 13963793. The next prime is 13963823. The reversal of 13963818 is 81836931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105721 + ... + 105852.

It is an arithmetic number, because the mean of its divisors is an integer number (1904166).

Almost surely, 2^13963818 is an apocalyptic number.

13963818 is an abundant number, since it is smaller than the sum of its proper divisors (16502838).

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

13963818 is a wasteful number, since it uses less digits than its factorization.

13963818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211589.

The product of its digits is 31104, while the sum is 39.

The square root of 13963818 is about 3736.8192356602. The cubic root of 13963818 is about 240.8064192760.

It can be divided in two parts, 139638 and 18, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 13963818 in words is "thirteen million, nine hundred sixty-three thousand, eight hundred eighteen".