3812987780 has 48 divisors (see below), whose sum is σ = 9156623616. Its totient is φ = 1306531200.

The previous prime is 3812987779. The next prime is 3812987791. The reversal of 3812987780 is 877892183.

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, 258977 + ... + 273303.

It is an arithmetic number, because the mean of its divisors is an integer number (190762992).

Almost surely, 2^3812987780 is an apocalyptic number.

It is an amenable number.

3812987780 is an abundant number, since it is smaller than the sum of its proper divisors (5343635836).

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

3812987780 is a wasteful number, since it uses less digits than its factorization.

3812987780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244 (or 16242 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 3812987780 is about 61749.3949767931. The cubic root of 3812987780 is about 1562.2665633558.

The spelling of 3812987780 in words is "three billion, eight hundred twelve million, nine hundred eighty-seven thousand, seven hundred eighty".