181154741 has 2 divisors, whose sum is σ = 181154742. Its totient is φ = 181154740.

The previous prime is 181154723. The next prime is 181154749. The reversal of 181154741 is 147451181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144600625 + 36554116 = 12025^2 + 6046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181154741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181154698 and 181154707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181154749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90577370 + 90577371.

It is an arithmetic number, because the mean of its divisors is an integer number (90577371).

Almost surely, 2^181154741 is an apocalyptic number.

It is an amenable number.

181154741 is a deficient number, since it is larger than the sum of its proper divisors (1).

181154741 is an equidigital number, since it uses as much as digits as its factorization.

181154741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 32.

The square root of 181154741 is about 13459.3737224285. The cubic root of 181154741 is about 565.8264366874.

The spelling of 181154741 in words is "one hundred eighty-one million, one hundred fifty-four thousand, seven hundred forty-one".