19780825948 has 48 divisors (see below), whose sum is σ = 37609143264. Its totient is φ = 9049178880.

The previous prime is 19780825891. The next prime is 19780825979. The reversal of 19780825948 is 84952808791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834103 + ... + 2841073.

It is an arithmetic number, because the mean of its divisors is an integer number (783523818).

Almost surely, 2^19780825948 is an apocalyptic number.

It is an amenable number.

19780825948 is a deficient number, since it is larger than the sum of its proper divisors (17828317316).

19780825948 is a wasteful number, since it uses less digits than its factorization.

19780825948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462 (or 7460 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 61.

The spelling of 19780825948 in words is "nineteen billion, seven hundred eighty million, eight hundred twenty-five thousand, nine hundred forty-eight".