638870323414 has 4 divisors (see below), whose sum is σ = 958305485124. Its totient is φ = 319435161706.

The previous prime is 638870323411. The next prime is 638870323417. The reversal of 638870323414 is 414323078836.

638870323414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (638870323411) and next prime (638870323417).

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638870323411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159717580852 + ... + 159717580855.

It is an arithmetic number, because the mean of its divisors is an integer number (239576371281).

Almost surely, 2^638870323414 is an apocalyptic number.

638870323414 is a deficient number, since it is larger than the sum of its proper divisors (319435161710).

638870323414 is a wasteful number, since it uses less digits than its factorization.

638870323414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319435161709.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 638870323414 in words is "six hundred thirty-eight billion, eight hundred seventy million, three hundred twenty-three thousand, four hundred fourteen".