4540973994 has 16 divisors (see below), whose sum is σ = 10091053440. Its totient is φ = 1513657980.

The previous prime is 4540973959. The next prime is 4540974013. The reversal of 4540973994 is 4993790454.

4540973994 is a `hidden beast` number, since 4 + 540 + 9 + 7 + 3 + 9 + 94 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 84092111 = 4540973994 / (4 + 5 + 4 + 0 + 9 + 7 + 3 + 9 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 4540973994.

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, 42046002 + ... + 42046109.

It is an arithmetic number, because the mean of its divisors is an integer number (630690840).

Almost surely, 2^4540973994 is an apocalyptic number.

4540973994 is an abundant number, since it is smaller than the sum of its proper divisors (5550079446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4540973994 is a wasteful number, since it uses less digits than its factorization.

4540973994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84092122 (or 84092116 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The square root of 4540973994 is about 67386.7493948180. The cubic root of 4540973994 is about 1655.9593497163.

The spelling of 4540973994 in words is "four billion, five hundred forty million, nine hundred seventy-three thousand, nine hundred ninety-four".