19782437404 has 24 divisors (see below), whose sum is σ = 36575840000. Its totient is φ = 9336040560.

The previous prime is 19782437399. The next prime is 19782437407. The reversal of 19782437404 is 40473428791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19782437407) 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, 459654 + ... + 500845.

Almost surely, 2^19782437404 is an apocalyptic number.

It is an amenable number.

19782437404 is a deficient number, since it is larger than the sum of its proper divisors (16793402596).

19782437404 is a wasteful number, since it uses less digits than its factorization.

19782437404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960793 (or 960791 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 19782437404 in words is "nineteen billion, seven hundred eighty-two million, four hundred thirty-seven thousand, four hundred four".