378640023 has 4 divisors (see below), whose sum is σ = 504853368. Its totient is φ = 252426680.

The previous prime is 378640021. The next prime is 378640027. The reversal of 378640023 is 320046873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378640023 - 2¹ = 378640021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378640021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63106668 + ... + 63106673.

It is an arithmetic number, because the mean of its divisors is an integer number (126213342).

Almost surely, 2^378640023 is an apocalyptic number.

378640023 is a deficient number, since it is larger than the sum of its proper divisors (126213345).

378640023 is a wasteful number, since it uses less digits than its factorization.

378640023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126213344.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 378640023 is about 19458.6747493245. The cubic root of 378640023 is about 723.4505302304.

Adding to 378640023 its reverse (320046873), we get a palindrome (698686896).

The spelling of 378640023 in words is "three hundred seventy-eight million, six hundred forty thousand, twenty-three".