181742652 has 144 divisors (see below), whose sum is σ = 585224640. Its totient is φ = 46255104.

The previous prime is 181742641. The next prime is 181742653. The reversal of 181742652 is 256247181.

181742652 is a `hidden beast` number, since 181 + 7 + 426 + 52 = 666.

181742652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181742653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94048 + ... + 95960.

It is an arithmetic number, because the mean of its divisors is an integer number (4064060).

Almost surely, 2^181742652 is an apocalyptic number.

181742652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181742652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292612320).

181742652 is an abundant number, since it is smaller than the sum of its proper divisors (403481988).

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

181742652 is a wasteful number, since it uses less digits than its factorization.

181742652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1967 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 181742652 is about 13481.1962377231. The cubic root of 181742652 is about 566.4378778054.

The spelling of 181742652 in words is "one hundred eighty-one million, seven hundred forty-two thousand, six hundred fifty-two".