4451986690 has 32 divisors (see below), whose sum is σ = 8572468464. Its totient is φ = 1658757120.

The previous prime is 4451986597. The next prime is 4451986703. The reversal of 4451986690 is 966891544.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2714514201 + 1737472489 = 52101^2 + 41683^2 .

It is a super-2 number, since 2×4451986690² = 39640370975874312200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118501 + ... + 151480.

Almost surely, 2^4451986690 is an apocalyptic number.

4451986690 is a deficient number, since it is larger than the sum of its proper divisors (4120481774).

4451986690 is a wasteful number, since it uses less digits than its factorization.

4451986690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270102.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 4451986690 is about 66723.2095301178. The cubic root of 4451986690 is about 1645.0708961416.

The spelling of 4451986690 in words is "four billion, four hundred fifty-one million, nine hundred eighty-six thousand, six hundred ninety".