181690482 has 16 divisors (see below), whose sum is σ = 365483520. Its totient is φ = 60213072.

The previous prime is 181690433. The next prime is 181690493. The reversal of 181690482 is 284096181.

It is a super-2 number, since 2×181690482² = 66022862498784648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181690482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86482 + ... + 88557.

It is an arithmetic number, because the mean of its divisors is an integer number (22842720).

Almost surely, 2^181690482 is an apocalyptic number.

181690482 is an abundant number, since it is smaller than the sum of its proper divisors (183793038).

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

181690482 is a wasteful number, since it uses less digits than its factorization.

181690482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175217.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 181690482 is about 13479.2611815337. The cubic root of 181690482 is about 566.3836731525.

The spelling of 181690482 in words is "one hundred eighty-one million, six hundred ninety thousand, four hundred eighty-two".