3840157 has 2 divisors, whose sum is σ = 3840158. Its totient is φ = 3840156.

The previous prime is 3840139. The next prime is 3840163. The reversal of 3840157 is 7510483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 1705636 = 1461^2 + 1306^2 .

It is an emirp because it is prime and its reverse (7510483) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3840157 is a prime.

3840157 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3840107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1920078 + 1920079.

It is an arithmetic number, because the mean of its divisors is an integer number (1920079).

Almost surely, 2^3840157 is an apocalyptic number.

It is an amenable number.

3840157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3840157 is an equidigital number, since it uses as much as digits as its factorization.

3840157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 3840157 is about 1959.6318531806. The cubic root of 3840157 is about 156.5968397643.

The spelling of 3840157 in words is "three million, eight hundred forty thousand, one hundred fifty-seven".