1349983578 has 16 divisors (see below), whose sum is σ = 2716136640. Its totient is φ = 447299616.

The previous prime is 1349983577. The next prime is 1349983601. The reversal of 1349983578 is 8753899431.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1349983571) 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, 672643 + ... + 674646.

It is an arithmetic number, because the mean of its divisors is an integer number (169758540).

Almost surely, 2^1349983578 is an apocalyptic number.

1349983578 is an abundant number, since it is smaller than the sum of its proper divisors (1366153062).

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

1349983578 is a wasteful number, since it uses less digits than its factorization.

1349983578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347461.

The product of its digits is 6531840, while the sum is 57.

The square root of 1349983578 is about 36742.1226659539. The cubic root of 1349983578 is about 1105.2049681543.

The spelling of 1349983578 in words is "one billion, three hundred forty-nine million, nine hundred eighty-three thousand, five hundred seventy-eight".