101440818 has 12 divisors (see below), whose sum is σ = 219788478. Its totient is φ = 33813600.

The previous prime is 101440813. The next prime is 101440837. The reversal of 101440818 is 818044101.

It can be written as a sum of positive squares in only one way, i.e., 81486729 + 19954089 = 9027^2 + 4467^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101440791 and 101440800.

It is not an unprimeable number, because it can be changed into a prime (101440813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2817783 + ... + 2817818.

Almost surely, 2^101440818 is an apocalyptic number.

101440818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

101440818 is an abundant number, since it is smaller than the sum of its proper divisors (118347660).

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

101440818 is a wasteful number, since it uses less digits than its factorization.

101440818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635609 (or 5635606 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 101440818 is about 10071.7832581922. The cubic root of 101440818 is about 466.3774901191.

Adding to 101440818 its reverse (818044101), we get a palindrome (919484919).

The spelling of 101440818 in words is "one hundred one million, four hundred forty thousand, eight hundred eighteen".