9021873647 has 4 divisors (see below), whose sum is σ = 9104643240. Its totient is φ = 8939104056.

The previous prime is 9021873631. The next prime is 9021873689. The reversal of 9021873647 is 7463781209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9021873647 - 2⁴ = 9021873631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9021873617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41384633 + ... + 41384850.

It is an arithmetic number, because the mean of its divisors is an integer number (2276160810).

Almost surely, 2^9021873647 is an apocalyptic number.

9021873647 is a deficient number, since it is larger than the sum of its proper divisors (82769593).

9021873647 is a wasteful number, since it uses less digits than its factorization.

9021873647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82769592.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 9021873647 is about 94983.5440852783. The cubic root of 9021873647 is about 2081.7676085561.

The spelling of 9021873647 in words is "nine billion, twenty-one million, eight hundred seventy-three thousand, six hundred forty-seven".