449138271378 has 32 divisors (see below), whose sum is σ = 911064091392. Its totient is φ = 147594224000.

The previous prime is 449138271377. The next prime is 449138271383. The reversal of 449138271378 is 873172831944.

It is not an unprimeable number, because it can be changed into a prime (449138271377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449258 + ... + 1731653.

It is an arithmetic number, because the mean of its divisors is an integer number (28470752856).

Almost surely, 2^449138271378 is an apocalyptic number.

449138271378 is an abundant number, since it is smaller than the sum of its proper divisors (461925820014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449138271378 is a wasteful number, since it uses less digits than its factorization.

449138271378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181250.

The product of its digits is 8128512, while the sum is 57.

The spelling of 449138271378 in words is "four hundred forty-nine billion, one hundred thirty-eight million, two hundred seventy-one thousand, three hundred seventy-eight".