981451218346 has 8 divisors (see below), whose sum is σ = 1536184515744. Its totient is φ = 469389713100.

The previous prime is 981451218343. The next prime is 981451218347. The reversal of 981451218346 is 643812154189.

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

It is a super-3 number, since 3×981451218346³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 981451218293 and 981451218302.

It is not an unprimeable number, because it can be changed into a prime (981451218343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10667947980 + ... + 10667948071.

It is an arithmetic number, because the mean of its divisors is an integer number (192023064468).

Almost surely, 2^981451218346 is an apocalyptic number.

981451218346 is a deficient number, since it is larger than the sum of its proper divisors (554733297398).

981451218346 is a wasteful number, since it uses less digits than its factorization.

981451218346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21335896076.

The product of its digits is 1658880, while the sum is 52.

The spelling of 981451218346 in words is "nine hundred eighty-one billion, four hundred fifty-one million, two hundred eighteen thousand, three hundred forty-six".