378223761 has 4 divisors (see below), whose sum is σ = 504298352. Its totient is φ = 252149172.

The previous prime is 378223751. The next prime is 378223763. The reversal of 378223761 is 167322873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 378223761 - 2¹¹ = 378221713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378223763) 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, 63037291 + ... + 63037296.

It is an arithmetic number, because the mean of its divisors is an integer number (126074588).

Almost surely, 2^378223761 is an apocalyptic number.

It is an amenable number.

378223761 is a deficient number, since it is larger than the sum of its proper divisors (126074591).

378223761 is a wasteful number, since it uses less digits than its factorization.

378223761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126074590.

The product of its digits is 84672, while the sum is 39.

The square root of 378223761 is about 19447.9757558467. The cubic root of 378223761 is about 723.1853219680.

The spelling of 378223761 in words is "three hundred seventy-eight million, two hundred twenty-three thousand, seven hundred sixty-one".