472181438 has 4 divisors (see below), whose sum is σ = 708272160. Its totient is φ = 236090718.

The previous prime is 472181431. The next prime is 472181449. The reversal of 472181438 is 834181274.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472181431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118045358 + ... + 118045361.

It is an arithmetic number, because the mean of its divisors is an integer number (177068040).

Almost surely, 2^472181438 is an apocalyptic number.

472181438 is a deficient number, since it is larger than the sum of its proper divisors (236090722).

472181438 is a wasteful number, since it uses less digits than its factorization.

472181438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236090721.

The product of its digits is 43008, while the sum is 38.

The square root of 472181438 is about 21729.7362616301. The cubic root of 472181438 is about 778.6990355754.

The spelling of 472181438 in words is "four hundred seventy-two million, one hundred eighty-one thousand, four hundred thirty-eight".