18901396 has 12 divisors (see below), whose sum is σ = 33125652. Its totient is φ = 9436928.

The previous prime is 18901391. The next prime is 18901411. The reversal of 18901396 is 69310981.

It can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 13793796 = 2260^2 + 3714^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18901391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (2760471).

Almost surely, 2^18901396 is an apocalyptic number.

It is an amenable number.

18901396 is a deficient number, since it is larger than the sum of its proper divisors (14224256).

18901396 is a wasteful number, since it uses less digits than its factorization.

18901396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6890 (or 6888 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 18901396 is about 4347.5735761457. The cubic root of 18901396 is about 266.3777586364.

The spelling of 18901396 in words is "eighteen million, nine hundred one thousand, three hundred ninety-six".