181359066 has 32 divisors (see below), whose sum is σ = 436354560. Its totient is φ = 49089456.

The previous prime is 181359053. The next prime is 181359133. The reversal of 181359066 is 660953181.

It is a super-2 number, since 2×181359066² = 65782221640784712, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112836 + ... + 114431.

It is an arithmetic number, because the mean of its divisors is an integer number (13636080).

Almost surely, 2^181359066 is an apocalyptic number.

181359066 is an abundant number, since it is smaller than the sum of its proper divisors (254995494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181359066 is a wasteful number, since it uses less digits than its factorization.

181359066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227298.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 181359066 is about 13466.9620182133. The cubic root of 181359066 is about 566.0390892272.

The spelling of 181359066 in words is "one hundred eighty-one million, three hundred fifty-nine thousand, sixty-six".