1379443144 has 16 divisors (see below), whose sum is σ = 2610630000. Its totient is φ = 683275152.

The previous prime is 1379443141. The next prime is 1379443157. The reversal of 1379443144 is 4413449731.

It is a junction number, because it is equal to n+sod(n) for n = 1379443097 and 1379443106.

It is not an unprimeable number, because it can be changed into a prime (1379443141) 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, 804894 + ... + 806605.

It is an arithmetic number, because the mean of its divisors is an integer number (163164375).

Almost surely, 2^1379443144 is an apocalyptic number.

It is an amenable number.

1379443144 is a deficient number, since it is larger than the sum of its proper divisors (1231186856).

1379443144 is a wasteful number, since it uses less digits than its factorization.

1379443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611612 (or 1611608 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 1379443144 is about 37140.8554559531. The cubic root of 1379443144 is about 1113.1865106522.

The spelling of 1379443144 in words is "one billion, three hundred seventy-nine million, four hundred forty-three thousand, one hundred forty-four".