1318881945006 has 48 divisors (see below), whose sum is σ = 2865380603904. Its totient is φ = 438428490192.

The previous prime is 1318881944999. The next prime is 1318881945019. The reversal of 1318881945006 is 6005491888131.

It is a happy number.

1318881945006 is a `hidden beast` number, since 1 + 3 + 188 + 8 + 1 + 9 + 450 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9655075 + ... + 9790721.

It is an arithmetic number, because the mean of its divisors is an integer number (59695429248).

Almost surely, 2^{1318881945006} is an apocalyptic number.

1318881945006 is an abundant number, since it is smaller than the sum of its proper divisors (1546498658898).

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

1318881945006 is a wasteful number, since it uses less digits than its factorization.

1318881945006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137125 (or 137122 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 1318881945006 in words is "one trillion, three hundred eighteen billion, eight hundred eighty-one million, nine hundred forty-five thousand, six".