1349808189 has 8 divisors (see below), whose sum is σ = 1800379200. Its totient is φ = 899554656.

The previous prime is 1349808157. The next prime is 1349808221. The reversal of 1349808189 is 9818089431.

It is an interprime number because it is at equal distance from previous prime (1349808157) and next prime (1349808221).

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

It is not a de Polignac number, because 1349808189 - 2⁵ = 1349808157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349808589) 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, 69264 + ... + 86585.

It is an arithmetic number, because the mean of its divisors is an integer number (225047400).

Almost surely, 2^1349808189 is an apocalyptic number.

It is an amenable number.

1349808189 is a deficient number, since it is larger than the sum of its proper divisors (450571011).

1349808189 is a wasteful number, since it uses less digits than its factorization.

1349808189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158739.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1349808189 is about 36739.7358319300. The cubic root of 1349808189 is about 1105.1571035747.

The spelling of 1349808189 in words is "one billion, three hundred forty-nine million, eight hundred eight thousand, one hundred eighty-nine".