4321491985 has 8 divisors (see below), whose sum is σ = 5364610920. Its totient is φ = 3337979904.

The previous prime is 4321491961. The next prime is 4321491989. The reversal of 4321491985 is 5891941234.

It can be written as a sum of positive squares in 4 ways, for example, as 616578561 + 3704913424 = 24831^2 + 60868^2 .

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 4321491985 - 2⁷ = 4321491857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4321491989) 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, 14901552 + ... + 14901841.

It is an arithmetic number, because the mean of its divisors is an integer number (670576365).

Almost surely, 2^4321491985 is an apocalyptic number.

It is an amenable number.

4321491985 is a deficient number, since it is larger than the sum of its proper divisors (1043118935).

4321491985 is a wasteful number, since it uses less digits than its factorization.

4321491985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29803427.

The product of its digits is 311040, while the sum is 46.

The square root of 4321491985 is about 65738.0558352618. The cubic root of 4321491985 is about 1628.8380423748.

The spelling of 4321491985 in words is "four billion, three hundred twenty-one million, four hundred ninety-one thousand, nine hundred eighty-five".