1218040573494 has 32 divisors (see below), whose sum is σ = 2561396819040. Its totient is φ = 385586611200.

The previous prime is 1218040573471. The next prime is 1218040573499. The reversal of 1218040573494 is 4943750408121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218040573499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57368347 + ... + 57389574.

It is an arithmetic number, because the mean of its divisors is an integer number (80043650595).

Almost surely, 2^{1218040573494} is an apocalyptic number.

1218040573494 is an abundant number, since it is smaller than the sum of its proper divisors (1343356245546).

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

1218040573494 is a wasteful number, since it uses less digits than its factorization.

1218040573494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114758016.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 1218040573494 in words is "one trillion, two hundred eighteen billion, forty million, five hundred seventy-three thousand, four hundred ninety-four".