6164992821 has 32 divisors (see below), whose sum is σ = 8914010112. Its totient is φ = 3767497920.

The previous prime is 6164992789. The next prime is 6164992831. The reversal of 6164992821 is 1282994616.

It is not a de Polignac number, because 6164992821 - 2⁵ = 6164992789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6164992831) 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, 4047166 + ... + 4048688.

It is an arithmetic number, because the mean of its divisors is an integer number (278562816).

Almost surely, 2^6164992821 is an apocalyptic number.

It is an amenable number.

6164992821 is a deficient number, since it is larger than the sum of its proper divisors (2749017291).

6164992821 is a wasteful number, since it uses less digits than its factorization.

6164992821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193.

The product of its digits is 373248, while the sum is 48.

The square root of 6164992821 is about 78517.4682538860. The cubic root of 6164992821 is about 1833.6264220754.

The spelling of 6164992821 in words is "six billion, one hundred sixty-four million, nine hundred ninety-two thousand, eight hundred twenty-one".