1181546272138 has 16 divisors (see below), whose sum is σ = 1877482185120. Its totient is φ = 556114970736.

The previous prime is 1181546272087. The next prime is 1181546272163. The reversal of 1181546272138 is 8312726451811.

It is a junction number, because it is equal to n+sod(n) for n = 1181546272091 and 1181546272100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99017356 + ... + 99029287.

It is an arithmetic number, because the mean of its divisors is an integer number (117342636570).

Almost surely, 2^{1181546272138} is an apocalyptic number.

1181546272138 is a deficient number, since it is larger than the sum of its proper divisors (695935912982).

1181546272138 is a wasteful number, since it uses less digits than its factorization.

1181546272138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198046821.

The product of its digits is 645120, while the sum is 49.

The spelling of 1181546272138 in words is "one trillion, one hundred eighty-one billion, five hundred forty-six million, two hundred seventy-two thousand, one hundred thirty-eight".