438819025919 has 4 divisors (see below), whose sum is σ = 452974478400. Its totient is φ = 424663573440.

The previous prime is 438819025889. The next prime is 438819025963. The reversal of 438819025919 is 919520918834.

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

It is a cyclic number.

It is not a de Polignac number, because 438819025919 - 2³² = 434524058623 is a prime.

It is a super-2 number, since 2×438819025919² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438819025969) 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, 7077726194 + ... + 7077726255.

It is an arithmetic number, because the mean of its divisors is an integer number (113243619600).

Almost surely, 2^438819025919 is an apocalyptic number.

438819025919 is a deficient number, since it is larger than the sum of its proper divisors (14155452481).

438819025919 is a wasteful number, since it uses less digits than its factorization.

438819025919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14155452480.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The spelling of 438819025919 in words is "four hundred thirty-eight billion, eight hundred nineteen million, twenty-five thousand, nine hundred nineteen".