180650898 has 60 divisors (see below), whose sum is σ = 427356270. Its totient is φ = 57029184.

The previous prime is 180650893. The next prime is 180650903. The reversal of 180650898 is 898056081.

It is an interprime number because it is at equal distance from previous prime (180650893) and next prime (180650903).

It can be written as a sum of positive squares in only one way, i.e., 116057529 + 64593369 = 10773^2 + 8037^2 .

It is not an unprimeable number, because it can be changed into a prime (180650893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 56938 + ... + 60026.

Almost surely, 2^180650898 is an apocalyptic number.

180650898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 180650898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213678135).

180650898 is an abundant number, since it is smaller than the sum of its proper divisors (246705372).

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

180650898 is a wasteful number, since it uses less digits than its factorization.

180650898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3113 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 180650898 is about 13440.6435113800. The cubic root of 180650898 is about 565.3013747058.

The spelling of 180650898 in words is "one hundred eighty million, six hundred fifty thousand, eight hundred ninety-eight".