19986202384 has 40 divisors (see below), whose sum is σ = 39840407640. Its totient is φ = 9705765888.

The previous prime is 19986202367. The next prime is 19986202399. The reversal of 19986202384 is 48320268991.

It can be written as a sum of positive squares in 4 ways, for example, as 3252192784 + 16734009600 = 57028^2 + 129360^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307182 + ... + 366514.

It is an arithmetic number, because the mean of its divisors is an integer number (996010191).

Almost surely, 2^19986202384 is an apocalyptic number.

It is an amenable number.

19986202384 is a deficient number, since it is larger than the sum of its proper divisors (19854205256).

19986202384 is a wasteful number, since it uses less digits than its factorization.

19986202384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59947 (or 59941 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 19986202384 in words is "nineteen billion, nine hundred eighty-six million, two hundred two thousand, three hundred eighty-four".