6189145531 has 4 divisors (see below), whose sum is σ = 6333079192. Its totient is φ = 6045211872.

The previous prime is 6189145517. The next prime is 6189145537. The reversal of 6189145531 is 1355419816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6189145531 - 2⁵ = 6189145499 is a prime.

It is a super-2 number, since 2×6189145531² = 76611044807794543922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 143933617 = 6189145531 / (6 + 1 + 8 + 9 + 1 + 4 + 5 + 5 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6189145537) 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, 71966766 + ... + 71966851.

It is an arithmetic number, because the mean of its divisors is an integer number (1583269798).

Almost surely, 2^6189145531 is an apocalyptic number.

6189145531 is a deficient number, since it is larger than the sum of its proper divisors (143933661).

6189145531 is a wasteful number, since it uses less digits than its factorization.

6189145531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143933660.

The product of its digits is 129600, while the sum is 43.

The square root of 6189145531 is about 78671.1225990833. The cubic root of 6189145531 is about 1836.0178462191.

The spelling of 6189145531 in words is "six billion, one hundred eighty-nine million, one hundred forty-five thousand, five hundred thirty-one".