19210985090 has 32 divisors (see below), whose sum is σ = 37821966336. Its totient is φ = 6967557760.

The previous prime is 19210985089. The next prime is 19210985111. The reversal of 19210985090 is 9058901291.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185867 + ... + 270126.

It is an arithmetic number, because the mean of its divisors is an integer number (1181936448).

Almost surely, 2^19210985090 is an apocalyptic number.

19210985090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19210985090 is a deficient number, since it is larger than the sum of its proper divisors (18610981246).

19210985090 is a wasteful number, since it uses less digits than its factorization.

19210985090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456394.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 19210985090 in words is "nineteen billion, two hundred ten million, nine hundred eighty-five thousand, ninety".