1218192903746 has 48 divisors (see below), whose sum is σ = 2295079971264. Its totient is φ = 474729532992.

The previous prime is 1218192903637. The next prime is 1218192903749. The reversal of 1218192903746 is 6473092918121.

It is a super-2 number, since 2×1218192903746² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1218192903749) 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 23 ways as a sum of consecutive naturals, for example, 3683825 + ... + 4000868.

It is an arithmetic number, because the mean of its divisors is an integer number (47814166068).

Almost surely, 2^{1218192903746} is an apocalyptic number.

1218192903746 is a deficient number, since it is larger than the sum of its proper divisors (1076887067518).

1218192903746 is a wasteful number, since it uses less digits than its factorization.

1218192903746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684795 (or 7684782 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 1218192903746 in words is "one trillion, two hundred eighteen billion, one hundred ninety-two million, nine hundred three thousand, seven hundred forty-six".