1921010422 has 8 divisors (see below), whose sum is σ = 2882324016. Its totient is φ = 960235752.

The previous prime is 1921010401. The next prime is 1921010459. The reversal of 1921010422 is 2240101291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1921010393 and 1921010402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125698 + ... + 140149.

It is an arithmetic number, because the mean of its divisors is an integer number (360290502).

Almost surely, 2^1921010422 is an apocalyptic number.

1921010422 is a deficient number, since it is larger than the sum of its proper divisors (961313594).

1921010422 is a wasteful number, since it uses less digits than its factorization.

1921010422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269462.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1921010422 is about 43829.3328947635. The cubic root of 1921010422 is about 1243.1109930406.

The spelling of 1921010422 in words is "one billion, nine hundred twenty-one million, ten thousand, four hundred twenty-two".