1905912768 has 56 divisors (see below), whose sum is σ = 5057436672. Its totient is φ = 633451264.

The previous prime is 1905912719. The next prime is 1905912769. The reversal of 1905912768 is 8672195091.

1905912768 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905912769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52321 + ... + 80927.

Almost surely, 2^1905912768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1905912768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528718336).

1905912768 is an abundant number, since it is smaller than the sum of its proper divisors (3151523904).

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

1905912768 is a wasteful number, since it uses less digits than its factorization.

1905912768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28969 (or 28959 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 1905912768 is about 43656.7608509839. The cubic root of 1905912768 is about 1239.8457942127.

The spelling of 1905912768 in words is "one billion, nine hundred five million, nine hundred twelve thousand, seven hundred sixty-eight".