19713902 has 8 divisors (see below), whose sum is σ = 31845576. Its totient is φ = 9098712.

The previous prime is 19713899. The next prime is 19713917. The reversal of 19713902 is 20931791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379088 + ... + 379139.

It is an arithmetic number, because the mean of its divisors is an integer number (3980697).

Almost surely, 2^19713902 is an apocalyptic number.

19713902 is a deficient number, since it is larger than the sum of its proper divisors (12131674).

19713902 is a wasteful number, since it uses less digits than its factorization.

19713902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758242.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 19713902 is about 4440.0340088788. The cubic root of 19713902 is about 270.1412247014.

The spelling of 19713902 in words is "nineteen million, seven hundred thirteen thousand, nine hundred two".