1442451538 has 16 divisors (see below), whose sum is σ = 2484606240. Its totient is φ = 621151200.

The previous prime is 1442451497. The next prime is 1442451539. The reversal of 1442451538 is 8351542441.

It is a junction number, because it is equal to n+sod(n) for n = 1442451497 and 1442451506.

It is not an unprimeable number, because it can be changed into a prime (1442451539) 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, 1725003 + ... + 1725838.

It is an arithmetic number, because the mean of its divisors is an integer number (155287890).

Almost surely, 2^1442451538 is an apocalyptic number.

1442451538 is a deficient number, since it is larger than the sum of its proper divisors (1042154702).

1442451538 is a wasteful number, since it uses less digits than its factorization.

1442451538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450873.

The product of its digits is 76800, while the sum is 37.

The square root of 1442451538 is about 37979.6200349609. The cubic root of 1442451538 is about 1129.8837006683.

Adding to 1442451538 its reverse (8351542441), we get a palindrome (9793993979).

The spelling of 1442451538 in words is "one billion, four hundred forty-two million, four hundred fifty-one thousand, five hundred thirty-eight".