1544394431226 has 16 divisors (see below), whose sum is σ = 3126003187104. Its totient is φ = 508595756304.

The previous prime is 1544394431207. The next prime is 1544394431243. The reversal of 1544394431226 is 6221344934451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550596321 + ... + 1550597316.

It is an arithmetic number, because the mean of its divisors is an integer number (195375199194).

Almost surely, 2^{1544394431226} is an apocalyptic number.

1544394431226 is an abundant number, since it is smaller than the sum of its proper divisors (1581608755878).

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

1544394431226 is a wasteful number, since it uses less digits than its factorization.

1544394431226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101193725.

The product of its digits is 2488320, while the sum is 48.

The spelling of 1544394431226 in words is "one trillion, five hundred forty-four billion, three hundred ninety-four million, four hundred thirty-one thousand, two hundred twenty-six".