189849531 has 8 divisors (see below), whose sum is σ = 254980944. Its totient is φ = 125642240.

The previous prime is 189849509. The next prime is 189849533. The reversal of 189849531 is 135948981.

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

It is a cyclic number.

It is not a de Polignac number, because 189849531 - 2¹⁵ = 189816763 is a prime.

It is a super-2 number, since 2×189849531² = 72085688841839922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189849533) 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, 230550 + ... + 231371.

It is an arithmetic number, because the mean of its divisors is an integer number (31872618).

Almost surely, 2^189849531 is an apocalyptic number.

189849531 is a deficient number, since it is larger than the sum of its proper divisors (65131413).

189849531 is a wasteful number, since it uses less digits than its factorization.

189849531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462061.

The product of its digits is 311040, while the sum is 48.

The square root of 189849531 is about 13778.5895867465. The cubic root of 189849531 is about 574.7379080267.

The spelling of 189849531 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, five hundred thirty-one".