1905764920 has 64 divisors (see below), whose sum is σ = 4413113280. Its totient is φ = 740146176.

The previous prime is 1905764893. The next prime is 1905764933. The reversal of 1905764920 is 294675091.

It is a happy number.

It is a congruent 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, 912117 + ... + 914203.

It is an arithmetic number, because the mean of its divisors is an integer number (68954895).

Almost surely, 2^1905764920 is an apocalyptic number.

1905764920 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 1905764920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2206556640).

1905764920 is an abundant number, since it is smaller than the sum of its proper divisors (2507348360).

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

1905764920 is a wasteful number, since it uses less digits than its factorization.

1905764920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752 (or 2748 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1905764920 is about 43655.0675179870. The cubic root of 1905764920 is about 1239.8137337280.

The spelling of 1905764920 in words is "one billion, nine hundred five million, seven hundred sixty-four thousand, nine hundred twenty".