8491928051 has 8 divisors (see below), whose sum is σ = 8507356704. Its totient is φ = 8476513920.

The previous prime is 8491928047. The next prime is 8491928069. The reversal of 8491928051 is 1508291948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8491928051 - 2² = 8491928047 is a prime.

It is a super-2 number, since 2×8491928051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8491927987 and 8491928005.

It is not an unprimeable number, because it can be changed into a prime (8491928041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2256011 + ... + 2259771.

It is an arithmetic number, because the mean of its divisors is an integer number (1063419588).

Almost surely, 2^8491928051 is an apocalyptic number.

8491928051 is a deficient number, since it is larger than the sum of its proper divisors (15428653).

8491928051 is a wasteful number, since it uses less digits than its factorization.

8491928051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7261.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 8491928051 is about 92151.6578852491. The cubic root of 8491928051 is about 2040.1813284769.

The spelling of 8491928051 in words is "eight billion, four hundred ninety-one million, nine hundred twenty-eight thousand, fifty-one".