19737625650 has 48 divisors (see below), whose sum is σ = 50087684064. Its totient is φ = 5140961280.

The previous prime is 19737625627. The next prime is 19737625679. The reversal of 19737625650 is 5652673791.

It is a junction number, because it is equal to n+sod(n) for n = 19737625593 and 19737625602.

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 23 ways as a sum of consecutive naturals, for example, 1523599 + ... + 1536498.

It is an arithmetic number, because the mean of its divisors is an integer number (1043493418).

Almost surely, 2^19737625650 is an apocalyptic number.

19737625650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19737625650 is an abundant number, since it is smaller than the sum of its proper divisors (30350058414).

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

19737625650 is a wasteful number, since it uses less digits than its factorization.

19737625650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060155 (or 3060150 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 51.

The spelling of 19737625650 in words is "nineteen billion, seven hundred thirty-seven million, six hundred twenty-five thousand, six hundred fifty".