381807623 has 2 divisors, whose sum is σ = 381807624. Its totient is φ = 381807622.

The previous prime is 381807619. The next prime is 381807637. The reversal of 381807623 is 326708183.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (326708183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381807623 - 2² = 381807619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381807653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190903811 + 190903812.

It is an arithmetic number, because the mean of its divisors is an integer number (190903812).

Almost surely, 2^381807623 is an apocalyptic number.

381807623 is a deficient number, since it is larger than the sum of its proper divisors (1).

381807623 is an equidigital number, since it uses as much as digits as its factorization.

381807623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 381807623 is about 19539.8982341260. The cubic root of 381807623 is about 725.4623277062.

The spelling of 381807623 in words is "three hundred eighty-one million, eight hundred seven thousand, six hundred twenty-three".