3836421887 has 2 divisors, whose sum is σ = 3836421888. Its totient is φ = 3836421886.

The previous prime is 3836421871. The next prime is 3836421913. The reversal of 3836421887 is 7881246383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3836421887 - 2⁴ = 3836421871 is a prime.

It is a super-3 number, since 3×3836421887³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3836421847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1918210943 + 1918210944.

It is an arithmetic number, because the mean of its divisors is an integer number (1918210944).

Almost surely, 2^3836421887 is an apocalyptic number.

3836421887 is a deficient number, since it is larger than the sum of its proper divisors (1).

3836421887 is an equidigital number, since it uses as much as digits as its factorization.

3836421887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 50.

The square root of 3836421887 is about 61938.8560356098. The cubic root of 3836421887 is about 1565.4605220269.

The spelling of 3836421887 in words is "three billion, eight hundred thirty-six million, four hundred twenty-one thousand, eight hundred eighty-seven".