381680093 has 2 divisors, whose sum is σ = 381680094. Its totient is φ = 381680092.

The previous prime is 381680087. The next prime is 381680099. The reversal of 381680093 is 390086183.

It is a balanced prime because it is at equal distance from previous prime (381680087) and next prime (381680099).

It can be written as a sum of positive squares in only one way, i.e., 358079929 + 23600164 = 18923^2 + 4858^2 .

It is a cyclic number.

It is not a de Polignac number, because 381680093 - 2¹² = 381675997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381680099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190840046 + 190840047.

It is an arithmetic number, because the mean of its divisors is an integer number (190840047).

Almost surely, 2^381680093 is an apocalyptic number.

It is an amenable number.

381680093 is a deficient number, since it is larger than the sum of its proper divisors (1).

381680093 is an equidigital number, since it uses as much as digits as its factorization.

381680093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 381680093 is about 19536.6346385451. The cubic root of 381680093 is about 725.3815466113.

The spelling of 381680093 in words is "three hundred eighty-one million, six hundred eighty thousand, ninety-three".