2399480181 has 48 divisors (see below), whose sum is σ = 4199779584. Its totient is φ = 1288714752.

The previous prime is 2399480137. The next prime is 2399480191. The reversal of 2399480181 is 1810849932.

2399480181 is a `hidden beast` number, since 2 + 3 + 99 + 480 + 1 + 81 = 666.

It is not a de Polignac number, because 2399480181 - 2¹³ = 2399471989 is a prime.

It is a super-3 number, since 3×2399480181³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399480191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1298200 + ... + 1300046.

It is an arithmetic number, because the mean of its divisors is an integer number (87495408).

Almost surely, 2^2399480181 is an apocalyptic number.

2399480181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2399480181 is a deficient number, since it is larger than the sum of its proper divisors (1800299403).

2399480181 is a wasteful number, since it uses less digits than its factorization.

2399480181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2399480181 is about 48984.4891879052. The cubic root of 2399480181 is about 1338.7692309718.

The spelling of 2399480181 in words is "two billion, three hundred ninety-nine million, four hundred eighty thousand, one hundred eighty-one".