3918223930 has 16 divisors (see below), whose sum is σ = 7296003720. Its totient is φ = 1513244992.

The previous prime is 3918223921. The next prime is 3918223931. The reversal of 3918223930 is 393228193.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2660599561 + 1257624369 = 51581^2 + 35463^2 .

It is not an unprimeable number, because it can be changed into a prime (3918223931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755269 + ... + 6755848.

Almost surely, 2^3918223930 is an apocalyptic number.

3918223930 is a deficient number, since it is larger than the sum of its proper divisors (3377779790).

3918223930 is a wasteful number, since it uses less digits than its factorization.

3918223930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13511153.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 3918223930 is about 62595.7181442948. The cubic root of 3918223930 is about 1576.5088662822.

The spelling of 3918223930 in words is "three billion, nine hundred eighteen million, two hundred twenty-three thousand, nine hundred thirty".