2381686145 has 8 divisors (see below), whose sum is σ = 3026142504. Its totient is φ = 1793269504.

The previous prime is 2381686127. The next prime is 2381686159. The reversal of 2381686145 is 5416861832.

2381686145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 902822209 + 1478863936 = 30047^2 + 38456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2381686145 - 2²² = 2377491841 is a prime.

It is a super-2 number, since 2×2381686145² = 11344857786569922050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2381686096 and 2381686105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14009834 + ... + 14010003.

It is an arithmetic number, because the mean of its divisors is an integer number (378267813).

Almost surely, 2^2381686145 is an apocalyptic number.

It is an amenable number.

2381686145 is a deficient number, since it is larger than the sum of its proper divisors (644456359).

2381686145 is a wasteful number, since it uses less digits than its factorization.

2381686145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28019859.

The product of its digits is 276480, while the sum is 44.

The square root of 2381686145 is about 48802.5219122947. The cubic root of 2381686145 is about 1335.4516737694.

The spelling of 2381686145 in words is "two billion, three hundred eighty-one million, six hundred eighty-six thousand, one hundred forty-five".