2905901900 has 72 divisors (see below), whose sum is σ = 7025550336. Its totient is φ = 1034190400.

The previous prime is 2905901837. The next prime is 2905901939. The reversal of 2905901900 is 91095092.

It is a super-2 number, since 2×2905901900² = 16888531704847220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23597 + ... + 79803.

It is an arithmetic number, because the mean of its divisors is an integer number (97577088).

Almost surely, 2^2905901900 is an apocalyptic number.

2905901900 is a gapful number since it is divisible by the number (20) 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 2905901900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3512775168).

2905901900 is an abundant number, since it is smaller than the sum of its proper divisors (4119648436).

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

2905901900 is a wasteful number, since it uses less digits than its factorization.

2905901900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56279 (or 56272 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 2905901900 is about 53906.4179852455. The cubic root of 2905901900 is about 1427.0098897872.

Adding to 2905901900 its reverse (91095092), we get a palindrome (2996996992).

The spelling of 2905901900 in words is "two billion, nine hundred five million, nine hundred one thousand, nine hundred".