3781387830 has 32 divisors (see below), whose sum is σ = 9900361728. Its totient is φ = 916700000.

The previous prime is 3781387777. The next prime is 3781387871. The reversal of 3781387830 is 387831873.

3781387830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3781387830.

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, 5729046 + ... + 5729705.

It is an arithmetic number, because the mean of its divisors is an integer number (309386304).

Almost surely, 2^3781387830 is an apocalyptic number.

3781387830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3781387830 is an abundant number, since it is smaller than the sum of its proper divisors (6118973898).

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

3781387830 is a wasteful number, since it uses less digits than its factorization.

3781387830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11458772.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 3781387830 is about 61492.9900883019. The cubic root of 3781387830 is about 1557.9388500616.

The spelling of 3781387830 in words is "three billion, seven hundred eighty-one million, three hundred eighty-seven thousand, eight hundred thirty".