4618921994 has 8 divisors (see below), whose sum is σ = 7097368068. Its totient is φ = 2253132640.

The previous prime is 4618921987. The next prime is 4618921997. The reversal of 4618921994 is 4991298164.

It can be written as a sum of positive squares in 2 ways, for example, as 4581259225 + 37662769 = 67685^2 + 6137^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4618921997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28164077 + ... + 28164240.

Almost surely, 2^4618921994 is an apocalyptic number.

4618921994 is a deficient number, since it is larger than the sum of its proper divisors (2478446074).

4618921994 is a wasteful number, since it uses less digits than its factorization.

4618921994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56328360.

The product of its digits is 1119744, while the sum is 53.

The square root of 4618921994 is about 67962.6514638739. The cubic root of 4618921994 is about 1665.3807585104.

The spelling of 4618921994 in words is "four billion, six hundred eighteen million, nine hundred twenty-one thousand, nine hundred ninety-four".