3878137 has 2 divisors, whose sum is σ = 3878138. Its totient is φ = 3878136.

The previous prime is 3878113. The next prime is 3878143. The reversal of 3878137 is 7318783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1948816 + 1929321 = 1396^2 + 1389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3878137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3878096 and 3878105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3878107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939068 + 1939069.

It is an arithmetic number, because the mean of its divisors is an integer number (1939069).

Almost surely, 2^3878137 is an apocalyptic number.

It is an amenable number.

3878137 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878137 is an equidigital number, since it uses as much as digits as its factorization.

3878137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 3878137 is about 1969.2986061032. The cubic root of 3878137 is about 157.1114061811. Note that the first 3 decimals are identical.

The spelling of 3878137 in words is "three million, eight hundred seventy-eight thousand, one hundred thirty-seven".