4640073985 has 8 divisors (see below), whose sum is σ = 5718577896. Its totient is φ = 3611733120.

The previous prime is 4640073973. The next prime is 4640074067. The reversal of 4640073985 is 5893700464.

It can be written as a sum of positive squares in 4 ways, for example, as 1046910736 + 3593163249 = 32356^2 + 59943^2 .

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

It is not a de Polignac number, because 4640073985 - 2¹⁹ = 4639549697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12540556 + ... + 12540925.

It is an arithmetic number, because the mean of its divisors is an integer number (714822237).

Almost surely, 2^4640073985 is an apocalyptic number.

It is an amenable number.

4640073985 is a deficient number, since it is larger than the sum of its proper divisors (1078503911).

4640073985 is a wasteful number, since it uses less digits than its factorization.

4640073985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25081523.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 4640073985 is about 68118.0885301401. The cubic root of 4640073985 is about 1667.9190480000.

The spelling of 4640073985 in words is "four billion, six hundred forty million, seventy-three thousand, nine hundred eighty-five".