1930190920 has 64 divisors (see below), whose sum is σ = 4971208320. Its totient is φ = 660731904.

The previous prime is 1930190909. The next prime is 1930191031. The reversal of 1930190920 is 290910391.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183319 + ... + 193561.

It is an arithmetic number, because the mean of its divisors is an integer number (77675130).

Almost surely, 2^1930190920 is an apocalyptic number.

1930190920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1930190920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485604160).

1930190920 is an abundant number, since it is smaller than the sum of its proper divisors (3041017400).

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

1930190920 is a wasteful number, since it uses less digits than its factorization.

1930190920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10934 (or 10930 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1930190920 is about 43933.9381344309. The cubic root of 1930190920 is about 1245.0881202983.

The spelling of 1930190920 in words is "one billion, nine hundred thirty million, one hundred ninety thousand, nine hundred twenty".