19740250388 has 12 divisors (see below), whose sum is σ = 36047413920. Its totient is φ = 9440989272.

The previous prime is 19740250367. The next prime is 19740250391. The reversal of 19740250388 is 88305204791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107283878 + ... + 107284061.

It is an arithmetic number, because the mean of its divisors is an integer number (3003951160).

Almost surely, 2^19740250388 is an apocalyptic number.

It is an amenable number.

19740250388 is a deficient number, since it is larger than the sum of its proper divisors (16307163532).

19740250388 is a wasteful number, since it uses less digits than its factorization.

19740250388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214567966 (or 214567964 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 19740250388 in words is "nineteen billion, seven hundred forty million, two hundred fifty thousand, three hundred eighty-eight".