7364021985 has 32 divisors (see below), whose sum is σ = 13127354880. Its totient is φ = 3916750464.

The previous prime is 7364021963. The next prime is 7364021989. The reversal of 7364021985 is 5891204637.

7364021985 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7364021985 - 2⁵ = 7364021953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

7364021985 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7364021985.

It is not an unprimeable number, because it can be changed into a prime (7364021989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24772 + ... + 123861.

It is an arithmetic number, because the mean of its divisors is an integer number (410229840).

It is a 1-persistent number, because it is pandigital, but 2⋅7364021985 = 14728043970 is not.

Almost surely, 2^7364021985 is an apocalyptic number.

7364021985 is the 49545-th octagonal number.

It is an amenable number.

7364021985 is a deficient number, since it is larger than the sum of its proper divisors (5763332895).

7364021985 is a wasteful number, since it uses less digits than its factorization.

7364021985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149014 (or 149008 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 7364021985 is about 85813.8799087886. The cubic root of 7364021985 is about 1945.5319119797.

The spelling of 7364021985 in words is "seven billion, three hundred sixty-four million, twenty-one thousand, nine hundred eighty-five".