1418018042981 has 4 divisors (see below), whose sum is σ = 1420331286732. Its totient is φ = 1415704799232.

The previous prime is 1418018042929. The next prime is 1418018042983. The reversal of 1418018042981 is 1892408108141.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659392720900 + 758625322081 = 812030^2 + 870991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1418018042981 is a prime.

It is a super-2 number, since 2×1418018042981² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1418018042983) 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, 1156620956 + ... + 1156622181.

It is an arithmetic number, because the mean of its divisors is an integer number (355082821683).

Almost surely, 2^{1418018042981} is an apocalyptic number.

It is an amenable number.

1418018042981 is a deficient number, since it is larger than the sum of its proper divisors (2313243751).

1418018042981 is an equidigital number, since it uses as much as digits as its factorization.

1418018042981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313243750.

The product of its (nonzero) digits is 147456, while the sum is 47.

The spelling of 1418018042981 in words is "one trillion, four hundred eighteen billion, eighteen million, forty-two thousand, nine hundred eighty-one".