1218226578970 has 32 divisors (see below), whose sum is σ = 2208970933776. Its totient is φ = 483699340800.

The previous prime is 1218226578883. The next prime is 1218226578991. The reversal of 1218226578970 is 798756228121.

It can be written as a sum of positive squares in 8 ways, for example, as 1195648210849 + 22578368121 = 1093457^2 + 150261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28832460 + ... + 28874680.

Almost surely, 2^{1218226578970} is an apocalyptic number.

1218226578970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1218226578970 is a deficient number, since it is larger than the sum of its proper divisors (990744354806).

1218226578970 is a wasteful number, since it uses less digits than its factorization.

1218226578970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63426.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 1218226578970 in words is "one trillion, two hundred eighteen billion, two hundred twenty-six million, five hundred seventy-eight thousand, nine hundred seventy".