3781107 has 32 divisors (see below), whose sum is σ = 6336000. Its totient is φ = 2207520.

The previous prime is 3781087. The next prime is 3781117. The reversal of 3781107 is 7011873.

It is not a de Polignac number, because 3781107 - 2¹⁰ = 3780083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

3781107 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3781117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8394 + ... + 8832.

It is an arithmetic number, because the mean of its divisors is an integer number (198000).

Almost surely, 2^3781107 is an apocalyptic number.

3781107 is a deficient number, since it is larger than the sum of its proper divisors (2554893).

3781107 is a wasteful number, since it uses less digits than its factorization.

3781107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 3781107 is about 1944.5068783627. The cubic root of 3781107 is about 155.7900281612.

3781107 divided by its sum of digits (27) gives a palindrome (140041).

It can be divided in two parts, 378 and 1107, that added together give a triangular number (1485 = T₅₄).

The spelling of 3781107 in words is "three million, seven hundred eighty-one thousand, one hundred seven".