1421146818 has 96 divisors (see below), whose sum is σ = 3878050176. Its totient is φ = 366073344.

The previous prime is 1421146799. The next prime is 1421146843. The reversal of 1421146818 is 8186411241.

1421146818 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60346 + ... + 80522.

It is an arithmetic number, because the mean of its divisors is an integer number (40396356).

Almost surely, 2^1421146818 is an apocalyptic number.

1421146818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421146818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939025088).

1421146818 is an abundant number, since it is smaller than the sum of its proper divisors (2456903358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421146818 is a wasteful number, since it uses less digits than its factorization.

1421146818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20248 (or 20245 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 1421146818 is about 37698.1009866545. The cubic root of 1421146818 is about 1124.2933683938.

The spelling of 1421146818 in words is "one billion, four hundred twenty-one million, one hundred forty-six thousand, eight hundred eighteen".