181046427 has 8 divisors (see below), whose sum is σ = 241918464. Its totient is φ = 120436008.

The previous prime is 181046423. The next prime is 181046429. The reversal of 181046427 is 724640181.

181046427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 181046427 - 2² = 181046423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (181046423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63783 + ... + 66560.

It is an arithmetic number, because the mean of its divisors is an integer number (30239808).

Almost surely, 2^181046427 is an apocalyptic number.

181046427 is a deficient number, since it is larger than the sum of its proper divisors (60872037).

181046427 is a wasteful number, since it uses less digits than its factorization.

181046427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130809.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 181046427 is about 13455.3493823089. The cubic root of 181046427 is about 565.7136433502.

It can be divided in two parts, 18104 and 6427, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 181046427 in words is "one hundred eighty-one million, forty-six thousand, four hundred twenty-seven".