19813675250 has 32 divisors (see below), whose sum is σ = 37100986416. Its totient is φ = 7923379200.

The previous prime is 19813675241. The next prime is 19813675261. The reversal of 19813675250 is 5257631891.

19813675250 = 12528² + 12529² + ... + 12652².

It can be written as a sum of positive squares in 8 ways, for example, as 2443226041 + 17370449209 = 49429^2 + 131797^2 .

It is a super-3 number, since 3×19813675250³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19813675195 and 19813675204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235282 + ... + 1251218.

Almost surely, 2^19813675250 is an apocalyptic number.

19813675250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19813675250 is a deficient number, since it is larger than the sum of its proper divisors (17287311166).

19813675250 is a wasteful number, since it uses less digits than its factorization.

19813675250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20927 (or 20917 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 19813675250 in words is "nineteen billion, eight hundred thirteen million, six hundred seventy-five thousand, two hundred fifty".