19408780190 has 16 divisors (see below), whose sum is σ = 35679120192. Its totient is φ = 7598330784.

The previous prime is 19408780163. The next prime is 19408780211. The reversal of 19408780190 is 9108780491.

It is a super-2 number, since 2×19408780190² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 20647169 + ... + 20648108.

It is an arithmetic number, because the mean of its divisors is an integer number (2229945012).

Almost surely, 2^19408780190 is an apocalyptic number.

19408780190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19408780190 is a deficient number, since it is larger than the sum of its proper divisors (16270340002).

19408780190 is a wasteful number, since it uses less digits than its factorization.

19408780190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41295331.

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 19408780190 in words is "nineteen billion, four hundred eight million, seven hundred eighty thousand, one hundred ninety".