2381618125 has 10 divisors (see below), whose sum is σ = 2976070790. Its totient is φ = 1905294000.

The previous prime is 2381618119. The next prime is 2381618143. The reversal of 2381618125 is 5218161832.

It can be written as a sum of positive squares in 5 ways, for example, as 715509001 + 1666109124 = 26749^2 + 40818^2 .

It is not a de Polignac number, because 2381618125 - 2⁵ = 2381618093 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1904670 + ... + 1905919.

It is an arithmetic number, because the mean of its divisors is an integer number (297607079).

Almost surely, 2^2381618125 is an apocalyptic number.

2381618125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2381618125 is a deficient number, since it is larger than the sum of its proper divisors (594452665).

2381618125 is an frugal number, since it uses more digits than its factorization.

2381618125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810609 (or 3810594 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 2381618125 is about 48801.8250171036. The cubic root of 2381618125 is about 1335.4389603272.

Adding to 2381618125 its reverse (5218161832), we get a palindrome (7599779957).

The spelling of 2381618125 in words is "two billion, three hundred eighty-one million, six hundred eighteen thousand, one hundred twenty-five".