378389623 has 2 divisors, whose sum is σ = 378389624. Its totient is φ = 378389622.

The previous prime is 378389611. The next prime is 378389633. The reversal of 378389623 is 326983873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378389623 - 2⁵ = 378389591 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378389633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189194811 + 189194812.

It is an arithmetic number, because the mean of its divisors is an integer number (189194812).

Almost surely, 2^378389623 is an apocalyptic number.

378389623 is a deficient number, since it is larger than the sum of its proper divisors (1).

378389623 is an equidigital number, since it uses as much as digits as its factorization.

378389623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 378389623 is about 19452.2395368760. The cubic root of 378389623 is about 723.2910190419.

The spelling of 378389623 in words is "three hundred seventy-eight million, three hundred eighty-nine thousand, six hundred twenty-three".