19757694050 has 24 divisors (see below), whose sum is σ = 37074536676. Its totient is φ = 7833136640.

The previous prime is 19757694031. The next prime is 19757694067. The reversal of 19757694050 is 5049675791.

It can be written as a sum of positive squares in 6 ways, for example, as 652649209 + 19105044841 = 25547^2 + 138221^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19757693983 and 19757694001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1742819 + ... + 1754118.

Almost surely, 2^19757694050 is an apocalyptic number.

19757694050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19757694050 is a deficient number, since it is larger than the sum of its proper divisors (17316842626).

19757694050 is a wasteful number, since it uses less digits than its factorization.

19757694050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497062 (or 3497057 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 53.

The spelling of 19757694050 in words is "nineteen billion, seven hundred fifty-seven million, six hundred ninety-four thousand, fifty".