4818066381 has 20 divisors (see below), whose sum is σ = 7510289952. Its totient is φ = 3072388968.

The previous prime is 4818066367. The next prime is 4818066391. The reversal of 4818066381 is 1836608184.

It is a happy number.

4818066381 is a `hidden beast` number, since 4 + 8 + 1 + 8 + 0 + 6 + 638 + 1 = 666.

It is not a de Polignac number, because 4818066381 - 2⁵ = 4818066349 is a prime.

It is a super-2 number, since 2×4818066381² = 46427527303444874322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4818066301) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1291231 + ... + 1294956.

Almost surely, 2^4818066381 is an apocalyptic number.

It is an amenable number.

4818066381 is a deficient number, since it is larger than the sum of its proper divisors (2692223571).

4818066381 is a wasteful number, since it uses less digits than its factorization.

4818066381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586222 (or 2586213 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 4818066381 is about 69412.2927225430. The cubic root of 4818066381 is about 1688.9790386995.

The spelling of 4818066381 in words is "four billion, eight hundred eighteen million, sixty-six thousand, three hundred eighty-one".