180198953 has 16 divisors (see below), whose sum is σ = 205200000. Its totient is φ = 156737280.

The previous prime is 180198943. The next prime is 180199003. The reversal of 180198953 is 359891081.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180198953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180198913) 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, 33548 + ... + 38546.

It is an arithmetic number, because the mean of its divisors is an integer number (12825000).

Almost surely, 2^180198953 is an apocalyptic number.

It is an amenable number.

180198953 is a deficient number, since it is larger than the sum of its proper divisors (25001047).

180198953 is a wasteful number, since it uses less digits than its factorization.

180198953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 180198953 is about 13423.8203578564. The cubic root of 180198953 is about 564.8295651119.

The spelling of 180198953 in words is "one hundred eighty million, one hundred ninety-eight thousand, nine hundred fifty-three".