181464402 has 32 divisors (see below), whose sum is σ = 436608000. Its totient is φ = 49117968.

The previous prime is 181464389. The next prime is 181464407. The reversal of 181464402 is 204464181.

181464402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 181464402.

It is not an unprimeable number, because it can be changed into a prime (181464407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112902 + ... + 114497.

It is an arithmetic number, because the mean of its divisors is an integer number (13644000).

Almost surely, 2^181464402 is an apocalyptic number.

181464402 is an abundant number, since it is smaller than the sum of its proper divisors (255143598).

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

181464402 is a wasteful number, since it uses less digits than its factorization.

181464402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227430.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 181464402 is about 13470.8723548254. The cubic root of 181464402 is about 566.1486559466.

The spelling of 181464402 in words is "one hundred eighty-one million, four hundred sixty-four thousand, four hundred two".