19413808 has 20 divisors (see below), whose sum is σ = 37688560. Its totient is φ = 9687744.

The previous prime is 19413767. The next prime is 19413809. The reversal of 19413808 is 80831491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19413809) 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, 10798 + ... + 12466.

It is an arithmetic number, because the mean of its divisors is an integer number (1884428).

Almost surely, 2^19413808 is an apocalyptic number.

It is an amenable number.

19413808 is a deficient number, since it is larger than the sum of its proper divisors (18274752).

19413808 is a wasteful number, since it uses less digits than its factorization.

19413808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 19413808 is about 4406.1103027500. The cubic root of 19413808 is about 268.7634723371.

The spelling of 19413808 in words is "nineteen million, four hundred thirteen thousand, eight hundred eight".