3816552021 has 16 divisors (see below), whose sum is σ = 5436518400. Its totient is φ = 2374474608.

The previous prime is 3816552013. The next prime is 3816552079. The reversal of 3816552021 is 1202556183.

It is not a de Polignac number, because 3816552021 - 2³ = 3816552013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3816552001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495861 + ... + 503498.

It is an arithmetic number, because the mean of its divisors is an integer number (339782400).

Almost surely, 2^3816552021 is an apocalyptic number.

It is an amenable number.

3816552021 is a deficient number, since it is larger than the sum of its proper divisors (1619966379).

3816552021 is a wasteful number, since it uses less digits than its factorization.

3816552021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999448.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 3816552021 is about 61778.2487692877. The cubic root of 3816552021 is about 1562.7531949027.

The spelling of 3816552021 in words is "three billion, eight hundred sixteen million, five hundred fifty-two thousand, twenty-one".