3816437021 has 2 divisors, whose sum is σ = 3816437022. Its totient is φ = 3816437020.

The previous prime is 3816437003. The next prime is 3816437041. The reversal of 3816437021 is 1207346183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1957620025 + 1858816996 = 44245^2 + 43114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3816437021 - 2²² = 3812242717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3816437041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1908218510 + 1908218511.

It is an arithmetic number, because the mean of its divisors is an integer number (1908218511).

Almost surely, 2^3816437021 is an apocalyptic number.

It is an amenable number.

3816437021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3816437021 is an equidigital number, since it uses as much as digits as its factorization.

3816437021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 3816437021 is about 61777.3180139766. The cubic root of 3816437021 is about 1562.7374984992.

The spelling of 3816437021 in words is "three billion, eight hundred sixteen million, four hundred thirty-seven thousand, twenty-one".