1218622013497 has 8 divisors (see below), whose sum is σ = 1392741188352. Its totient is φ = 1044510417600.

The previous prime is 1218622013443. The next prime is 1218622013507. The reversal of 1218622013497 is 7943102268121.

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 1218622013497 - 2³⁹ = 668866199609 is a prime.

It is a super-2 number, since 2×1218622013497² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218622013197) 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, 1545904 + ... + 2197057.

It is an arithmetic number, because the mean of its divisors is an integer number (174092648544).

Almost surely, 2^{1218622013497} is an apocalyptic number.

It is an amenable number.

1218622013497 is a deficient number, since it is larger than the sum of its proper divisors (174119174855).

1218622013497 is an equidigital number, since it uses as much as digits as its factorization.

1218622013497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789479.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 1218622013497 in words is "one trillion, two hundred eighteen billion, six hundred twenty-two million, thirteen thousand, four hundred ninety-seven".