1373545144 has 16 divisors (see below), whose sum is σ = 2577531600. Its totient is φ = 686203392.

The previous prime is 1373545139. The next prime is 1373545181. The reversal of 1373545144 is 4415453731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60804 + ... + 80275.

It is an arithmetic number, because the mean of its divisors is an integer number (161095725).

Almost surely, 2^1373545144 is an apocalyptic number.

It is an amenable number.

1373545144 is a deficient number, since it is larger than the sum of its proper divisors (1203986456).

1373545144 is a wasteful number, since it uses less digits than its factorization.

1373545144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142302 (or 142298 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 1373545144 is about 37061.3699692820. The cubic root of 1373545144 is about 1111.5977164833.

Adding to 1373545144 its reverse (4415453731), we get a palindrome (5788998875).

The spelling of 1373545144 in words is "one billion, three hundred seventy-three million, five hundred forty-five thousand, one hundred forty-four".