181048647 has 16 divisors (see below), whose sum is σ = 263104128. Its totient is φ = 110070240.

The previous prime is 181048633. The next prime is 181048667. The reversal of 181048647 is 746840181.

181048647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 181048647 - 2⁷ = 181048519 is a prime.

It is a super-2 number, since 2×181048647² = 65557225161061218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181048607) 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, 24729 + ... + 31202.

It is an arithmetic number, because the mean of its divisors is an integer number (16444008).

Almost surely, 2^181048647 is an apocalyptic number.

181048647 is a deficient number, since it is larger than the sum of its proper divisors (82055481).

181048647 is a wasteful number, since it uses less digits than its factorization.

181048647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56030.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 181048647 is about 13455.4318771268. The cubic root of 181048647 is about 565.7159556100.

The spelling of 181048647 in words is "one hundred eighty-one million, forty-eight thousand, six hundred forty-seven".