3777820138 has 24 divisors (see below), whose sum is σ = 6029971200. Its totient is φ = 1774757568.

The previous prime is 3777820069. The next prime is 3777820147. The reversal of 3777820138 is 8310287773.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352503 + ... + 363061.

It is an arithmetic number, because the mean of its divisors is an integer number (251248800).

Almost surely, 2^3777820138 is an apocalyptic number.

3777820138 is a deficient number, since it is larger than the sum of its proper divisors (2252151062).

3777820138 is a wasteful number, since it uses less digits than its factorization.

3777820138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214 (or 11197 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 3777820138 is about 61463.9743101599. The cubic root of 3777820138 is about 1557.4487306324.

The spelling of 3777820138 in words is "three billion, seven hundred seventy-seven million, eight hundred twenty thousand, one hundred thirty-eight".