438145938899 has 8 divisors (see below), whose sum is σ = 444168066432. Its totient is φ = 432124355520.

The previous prime is 438145938889. The next prime is 438145938907. The reversal of 438145938899 is 998839541834.

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

It is a cyclic number.

It is not a de Polignac number, because 438145938899 - 2¹² = 438145934803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438145938859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644389 + ... + 1892169.

It is an arithmetic number, because the mean of its divisors is an integer number (55521008304).

Almost surely, 2^438145938899 is an apocalyptic number.

438145938899 is a deficient number, since it is larger than the sum of its proper divisors (6022127533).

438145938899 is a wasteful number, since it uses less digits than its factorization.

438145938899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272077.

The product of its digits is 268738560, while the sum is 71.

The spelling of 438145938899 in words is "four hundred thirty-eight billion, one hundred forty-five million, nine hundred thirty-eight thousand, eight hundred ninety-nine".