1920633906 has 16 divisors (see below), whose sum is σ = 4008279744. Its totient is φ = 612375984.

The previous prime is 1920633887. The next prime is 1920633937. The reversal of 1920633906 is 6093360291.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6958681 + ... + 6958956.

It is an arithmetic number, because the mean of its divisors is an integer number (250517484).

Almost surely, 2^1920633906 is an apocalyptic number.

1920633906 is an abundant number, since it is smaller than the sum of its proper divisors (2087645838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1920633906 is a wasteful number, since it uses less digits than its factorization.

1920633906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13917665.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 1920633906 is about 43825.0374329561. The cubic root of 1920633906 is about 1243.0297715897.

The spelling of 1920633906 in words is "one billion, nine hundred twenty million, six hundred thirty-three thousand, nine hundred six".