223795781438 has 8 divisors (see below), whose sum is σ = 339465511440. Its totient is φ = 110640610960.

The previous prime is 223795781423. The next prime is 223795781519. The reversal of 223795781438 is 834187597322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628639658 + ... + 628640013.

It is an arithmetic number, because the mean of its divisors is an integer number (42433188930).

Almost surely, 2^223795781438 is an apocalyptic number.

223795781438 is a deficient number, since it is larger than the sum of its proper divisors (115669730002).

223795781438 is a wasteful number, since it uses less digits than its factorization.

223795781438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257279762.

The product of its digits is 20321280, while the sum is 59.

The spelling of 223795781438 in words is "two hundred twenty-three billion, seven hundred ninety-five million, seven hundred eighty-one thousand, four hundred thirty-eight".