1392445002138 has 16 divisors (see below), whose sum is σ = 2785658717376. Its totient is φ = 464020215200.

The previous prime is 1392445002133. The next prime is 1392445002139. The reversal of 1392445002138 is 8312005442931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1392445002138.

It is not an unprimeable number, because it can be changed into a prime (1392445002131) 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, 32006163 + ... + 32049638.

It is an arithmetic number, because the mean of its divisors is an integer number (174103669836).

Almost surely, 2^{1392445002138} is an apocalyptic number.

1392445002138 is an abundant number, since it is smaller than the sum of its proper divisors (1393213715238).

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

1392445002138 is a wasteful number, since it uses less digits than its factorization.

1392445002138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64059429.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 1392445002138 in words is "one trillion, three hundred ninety-two billion, four hundred forty-five million, two thousand, one hundred thirty-eight".