1218053093381 has 8 divisors (see below), whose sum is σ = 1271883111360. Its totient is φ = 1164295674432.

The previous prime is 1218053093363. The next prime is 1218053093407. The reversal of 1218053093381 is 1833903508121.

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

It is a cyclic number.

It is not a de Polignac number, because 1218053093381 - 2³⁰ = 1216979351557 is a prime.

It is a super-2 number, since 2×1218053093381² (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 (1218053093351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18115460 + ... + 18182573.

It is an arithmetic number, because the mean of its divisors is an integer number (158985388920).

Almost surely, 2^{1218053093381} is an apocalyptic number.

It is an amenable number.

1218053093381 is a deficient number, since it is larger than the sum of its proper divisors (53830017979).

1218053093381 is a wasteful number, since it uses less digits than its factorization.

1218053093381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36299515.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 1218053093381 in words is "one trillion, two hundred eighteen billion, fifty-three million, ninety-three thousand, three hundred eighty-one".