3878631 has 8 divisors (see below), whose sum is σ = 5746160. Its totient is φ = 2585736.

The previous prime is 3878629. The next prime is 3878647. The reversal of 3878631 is 1368783.

It is not a de Polignac number, because 3878631 - 2¹ = 3878629 is a prime.

It is a super-2 number, since 2×3878631² = 30087556868322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71800 + ... + 71853.

It is an arithmetic number, because the mean of its divisors is an integer number (718270).

Almost surely, 2^3878631 is an apocalyptic number.

3878631 is a deficient number, since it is larger than the sum of its proper divisors (1867529).

3878631 is a wasteful number, since it uses less digits than its factorization.

3878631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143662 (or 143656 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3878631 is about 1969.4240274761. The cubic root of 3878631 is about 157.1180768875.

The spelling of 3878631 in words is "three million, eight hundred seventy-eight thousand, six hundred thirty-one".