180126644 has 6 divisors (see below), whose sum is σ = 315221634. Its totient is φ = 90063320.

The previous prime is 180126637. The next prime is 180126649. The reversal of 180126644 is 446621081.

180126644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 92891044 + 87235600 = 9638^2 + 9340^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180126644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180126649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22515827 + ... + 22515834.

It is an arithmetic number, because the mean of its divisors is an integer number (52536939).

Almost surely, 2^180126644 is an apocalyptic number.

It is an amenable number.

180126644 is a deficient number, since it is larger than the sum of its proper divisors (135094990).

180126644 is a wasteful number, since it uses less digits than its factorization.

180126644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45031665 (or 45031663 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 180126644 is about 13421.1267783298. The cubic root of 180126644 is about 564.7540046928.

The spelling of 180126644 in words is "one hundred eighty million, one hundred twenty-six thousand, six hundred forty-four".