1444668137 has 8 divisors (see below), whose sum is σ = 1599524832. Its totient is φ = 1293732000.

The previous prime is 1444668103. The next prime is 1444668139. The reversal of 1444668137 is 7318664441.

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

It is not a de Polignac number, because 1444668137 - 2⁶ = 1444668073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444668139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979364 + ... + 980837.

It is an arithmetic number, because the mean of its divisors is an integer number (199940604).

Almost surely, 2^1444668137 is an apocalyptic number.

It is an amenable number.

1444668137 is a deficient number, since it is larger than the sum of its proper divisors (154856695).

1444668137 is a wasteful number, since it uses less digits than its factorization.

1444668137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960279.

The product of its digits is 387072, while the sum is 44.

The square root of 1444668137 is about 38008.7902596228. The cubic root of 1444668137 is about 1130.4621643071.

The spelling of 1444668137 in words is "one billion, four hundred forty-four million, six hundred sixty-eight thousand, one hundred thirty-seven".