18893343446 has 8 divisors (see below), whose sum is σ = 28359851520. Its totient is φ = 9440059608.

The previous prime is 18893343437. The next prime is 18893343461. The reversal of 18893343446 is 64434339881.

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

It is a super-2 number, since 2×18893343446² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302486 + ... + 3308201.

It is an arithmetic number, because the mean of its divisors is an integer number (3544981440).

Almost surely, 2^18893343446 is an apocalyptic number.

18893343446 is a deficient number, since it is larger than the sum of its proper divisors (9466508074).

18893343446 is a wasteful number, since it uses less digits than its factorization.

18893343446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612118.

The product of its digits is 5971968, while the sum is 53.

The spelling of 18893343446 in words is "eighteen billion, eight hundred ninety-three million, three hundred forty-three thousand, four hundred forty-six".