1443706138 has 8 divisors (see below), whose sum is σ = 2474924832. Its totient is φ = 618731196.

The previous prime is 1443706133. The next prime is 1443706139. The reversal of 1443706138 is 8316073441.

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

It is a junction number, because it is equal to n+sod(n) for n = 1443706097 and 1443706106.

It is not an unprimeable number, because it can be changed into a prime (1443706133) 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, 51560920 + ... + 51560947.

It is an arithmetic number, because the mean of its divisors is an integer number (309365604).

Almost surely, 2^1443706138 is an apocalyptic number.

1443706138 is a deficient number, since it is larger than the sum of its proper divisors (1031218694).

1443706138 is a wasteful number, since it uses less digits than its factorization.

1443706138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103121876.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1443706138 is about 37996.1331979979. The cubic root of 1443706138 is about 1130.2111851096.

Adding to 1443706138 its reverse (8316073441), we get a palindrome (9759779579).

The spelling of 1443706138 in words is "one billion, four hundred forty-three million, seven hundred six thousand, one hundred thirty-eight".