1945800000 has 504 divisors, whose sum is σ = 7429024512. Its totient is φ = 485760000.

The previous prime is 1945799983. The next prime is 1945800041. The reversal of 1945800000 is 85491.

It is a super-2 number, since 2×1945800000² = 7572275280000000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 41399977 + ... + 41400023.

It is an arithmetic number, because the mean of its divisors is an integer number (14740128).

Almost surely, 2^1945800000 is an apocalyptic number.

1945800000 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 1945800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3714512256).

1945800000 is an abundant number, since it is smaller than the sum of its proper divisors (5483224512).

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

1945800000 is an equidigital number, since it uses as much as digits as its factorization.

1945800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1945800000 is about 44111.2230617107. The cubic root of 1945800000 is about 1248.4353757111.

Adding to 1945800000 its reverse (85491), we get a palindrome (1945885491).

The spelling of 1945800000 in words is "one billion, nine hundred forty-five million, eight hundred thousand".