378734623 has 4 divisors (see below), whose sum is σ = 378932488. Its totient is φ = 378536760.

The previous prime is 378734617. The next prime is 378734641. The reversal of 378734623 is 326437873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326437873 = 23 ⋅14192951.

It is a cyclic number.

It is not a de Polignac number, because 378734623 - 2¹⁷ = 378603551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378734623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378734723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 96033 + ... + 99898.

It is an arithmetic number, because the mean of its divisors is an integer number (94733122).

Almost surely, 2^378734623 is an apocalyptic number.

378734623 is a deficient number, since it is larger than the sum of its proper divisors (197865).

378734623 is a wasteful number, since it uses less digits than its factorization.

378734623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197864.

The product of its digits is 508032, while the sum is 43.

The square root of 378734623 is about 19461.1053899823. The cubic root of 378734623 is about 723.5107745409.

The spelling of 378734623 in words is "three hundred seventy-eight million, seven hundred thirty-four thousand, six hundred twenty-three".