2381457666 has 16 divisors (see below), whose sum is σ = 5443331904. Its totient is φ = 680416464.

The previous prime is 2381457643. The next prime is 2381457703. The reversal of 2381457666 is 6667541832.

It is a super-2 number, since 2×2381457666² = 11342681229900335112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28350645 + ... + 28350728.

It is an arithmetic number, because the mean of its divisors is an integer number (340208244).

Almost surely, 2^2381457666 is an apocalyptic number.

2381457666 is an abundant number, since it is smaller than the sum of its proper divisors (3061874238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2381457666 is a wasteful number, since it uses less digits than its factorization.

2381457666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56701385.

The product of its digits is 1451520, while the sum is 48.

The square root of 2381457666 is about 48800.1810037627. The cubic root of 2381457666 is about 1335.4089683915.

The spelling of 2381457666 in words is "two billion, three hundred eighty-one million, four hundred fifty-seven thousand, six hundred sixty-six".