180479901 has 32 divisors (see below), whose sum is σ = 282839040. Its totient is φ = 100223424.

The previous prime is 180479899. The next prime is 180479903. The reversal of 180479901 is 109974081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (180479899) and next prime (180479903).

It is not a de Polignac number, because 180479901 - 2¹ = 180479899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180479901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180479903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242536 + ... + 243278.

It is an arithmetic number, because the mean of its divisors is an integer number (8838720).

Almost surely, 2^180479901 is an apocalyptic number.

It is an amenable number.

180479901 is a deficient number, since it is larger than the sum of its proper divisors (102359139).

180479901 is a wasteful number, since it uses less digits than its factorization.

180479901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 180479901 is about 13434.2808143942. The cubic root of 180479901 is about 565.1229544193.

The spelling of 180479901 in words is "one hundred eighty million, four hundred seventy-nine thousand, nine hundred one".