3815081 has 2 divisors, whose sum is σ = 3815082. Its totient is φ = 3815080.

The previous prime is 3815069. The next prime is 3815083. The reversal of 3815081 is 1805183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 502681 = 1820^2 + 709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3815081 is a prime.

It is a super-2 number, since 2×3815081² = 29109686073122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3815083, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3815081.

It is not a weakly prime, because it can be changed into another prime (3815083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1907540 + 1907541.

It is an arithmetic number, because the mean of its divisors is an integer number (1907541).

Almost surely, 2^3815081 is an apocalyptic number.

It is an amenable number.

3815081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3815081 is an equidigital number, since it uses as much as digits as its factorization.

3815081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 3815081 is about 1953.2232335296. The cubic root of 3815081 is about 156.2552390777.

The spelling of 3815081 in words is "three million, eight hundred fifteen thousand, eighty-one".