2381804506 has 4 divisors (see below), whose sum is σ = 3572706762. Its totient is φ = 1190902252.

The previous prime is 2381804501. The next prime is 2381804531. The reversal of 2381804506 is 6054081832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1994069025 + 387735481 = 44655^2 + 19691^2 .

It is not an unprimeable number, because it can be changed into a prime (2381804501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595451125 + ... + 595451128.

Almost surely, 2^2381804506 is an apocalyptic number.

2381804506 is a deficient number, since it is larger than the sum of its proper divisors (1190902256).

2381804506 is a wasteful number, since it uses less digits than its factorization.

2381804506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190902255.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 2381804506 is about 48803.7345497248. The cubic root of 2381804506 is about 1335.4737957406.

The spelling of 2381804506 in words is "two billion, three hundred eighty-one million, eight hundred four thousand, five hundred six".