1181174048921 has 16 divisors (see below), whose sum is σ = 1218042157824. Its totient is φ = 1144803195264.

The previous prime is 1181174048911. The next prime is 1181174048941. The reversal of 1181174048921 is 1298404711811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1181174048921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (1181174048911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13600391 + ... + 13686963.

It is an arithmetic number, because the mean of its divisors is an integer number (76127634864).

Almost surely, 2^{1181174048921} is an apocalyptic number.

It is an amenable number.

1181174048921 is a deficient number, since it is larger than the sum of its proper divisors (36868108903).

1181174048921 is a wasteful number, since it uses less digits than its factorization.

1181174048921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89440.

The product of its (nonzero) digits is 129024, while the sum is 47.

The spelling of 1181174048921 in words is "one trillion, one hundred eighty-one billion, one hundred seventy-four million, forty-eight thousand, nine hundred twenty-one".