187904421048 has 16 divisors (see below), whose sum is σ = 469761052680. Its totient is φ = 62634807008.

The previous prime is 187904421007. The next prime is 187904421059. The reversal of 187904421048 is 840124409781.

It is a junction number, because it is equal to n+sod(n) for n = 187904420988 and 187904421006.

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, 3914675415 + ... + 3914675462.

Almost surely, 2^187904421048 is an apocalyptic number.

It is an amenable number.

187904421048 is an abundant number, since it is smaller than the sum of its proper divisors (281856631632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187904421048 is a wasteful number, since it uses less digits than its factorization.

187904421048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7829350886 (or 7829350882 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 187904421048 in words is "one hundred eighty-seven billion, nine hundred four million, four hundred twenty-one thousand, forty-eight".