3878151 has 4 divisors (see below), whose sum is σ = 5170872. Its totient is φ = 2585432.

The previous prime is 3878143. The next prime is 3878177. The reversal of 3878151 is 1518783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3878151 - 2³ = 3878143 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646356 + ... + 646361.

It is an arithmetic number, because the mean of its divisors is an integer number (1292718).

Almost surely, 2^3878151 is an apocalyptic number.

3878151 is a deficient number, since it is larger than the sum of its proper divisors (1292721).

3878151 is a wasteful number, since it uses less digits than its factorization.

3878151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292720.

The product of its digits is 6720, while the sum is 33.

The square root of 3878151 is about 1969.3021606650. The cubic root of 3878151 is about 157.1115952373. Note that the first 3 decimals are identical.

The spelling of 3878151 in words is "three million, eight hundred seventy-eight thousand, one hundred fifty-one".