7816549533 has 32 divisors (see below), whose sum is σ = 11412675456. Its totient is φ = 4729632768.

The previous prime is 7816549523. The next prime is 7816549549. The reversal of 7816549533 is 3359456187.

It is not a de Polignac number, because 7816549533 - 2⁵ = 7816549501 is a prime.

It is a super-2 number, since 2×7816549533² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7816549523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955366 + ... + 963512.

It is an arithmetic number, because the mean of its divisors is an integer number (356646108).

Almost surely, 2^7816549533 is an apocalyptic number.

7816549533 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

7816549533 is a deficient number, since it is larger than the sum of its proper divisors (3596125923).

7816549533 is a wasteful number, since it uses less digits than its factorization.

7816549533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8573.

The product of its digits is 2721600, while the sum is 51.

The square root of 7816549533 is about 88411.2522985621. The cubic root of 7816549533 is about 1984.5940948319.

The spelling of 7816549533 in words is "seven billion, eight hundred sixteen million, five hundred forty-nine thousand, five hundred thirty-three".