181494946 has 8 divisors (see below), whose sum is σ = 278882604. Its totient is φ = 88534080.

The previous prime is 181494917. The next prime is 181494967. The reversal of 181494946 is 649494181.

It can be written as a sum of positive squares in 2 ways, for example, as 157377025 + 24117921 = 12545^2 + 4911^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 181494896 and 181494905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106595 + ... + 1106758.

Almost surely, 2^181494946 is an apocalyptic number.

181494946 is a deficient number, since it is larger than the sum of its proper divisors (97387658).

181494946 is a wasteful number, since it uses less digits than its factorization.

181494946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213396.

The product of its digits is 248832, while the sum is 46.

The square root of 181494946 is about 13472.0060124690. The cubic root of 181494946 is about 566.1804187868.

The spelling of 181494946 in words is "one hundred eighty-one million, four hundred ninety-four thousand, nine hundred forty-six".