531849109 has 4 divisors (see below), whose sum is σ = 580199040. Its totient is φ = 483499180.

The previous prime is 531849103. The next prime is 531849119. The reversal of 531849109 is 901948135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531849109 - 2¹¹ = 531847061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531849103) 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, 24174949 + ... + 24174970.

It is an arithmetic number, because the mean of its divisors is an integer number (145049760).

Almost surely, 2^531849109 is an apocalyptic number.

It is an amenable number.

531849109 is a deficient number, since it is larger than the sum of its proper divisors (48349931).

531849109 is a wasteful number, since it uses less digits than its factorization.

531849109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48349930.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 531849109 is about 23061.8539801118. The cubic root of 531849109 is about 810.2072878008.

The spelling of 531849109 in words is "five hundred thirty-one million, eight hundred forty-nine thousand, one hundred nine".