19408920350 has 24 divisors (see below), whose sum is σ = 36105170520. Its totient is φ = 7762583520.

The previous prime is 19408920329. The next prime is 19408920359. The reversal of 19408920350 is 5302980491.

It is a junction number, because it is equal to n+sod(n) for n = 19408920298 and 19408920307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408920359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473264 + ... + 512636.

It is an arithmetic number, because the mean of its divisors is an integer number (1504382105).

Almost surely, 2^19408920350 is an apocalyptic number.

19408920350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19408920350 is a deficient number, since it is larger than the sum of its proper divisors (16696250170).

19408920350 is a wasteful number, since it uses less digits than its factorization.

19408920350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49244 (or 49239 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 19408920350 in words is "nineteen billion, four hundred eight million, nine hundred twenty thousand, three hundred fifty".