189836537 has 16 divisors (see below), whose sum is σ = 210171840. Its totient is φ = 171452160.

The previous prime is 189836531. The next prime is 189836539. The reversal of 189836537 is 735638981.

It is a happy number.

It is not a de Polignac number, because 189836537 - 2⁶ = 189836473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189836531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256514 + ... + 257252.

It is an arithmetic number, because the mean of its divisors is an integer number (13135740).

Almost surely, 2^189836537 is an apocalyptic number.

It is an amenable number.

189836537 is a deficient number, since it is larger than the sum of its proper divisors (20335303).

189836537 is an equidigital number, since it uses as much as digits as its factorization.

189836537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 943 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 189836537 is about 13778.1180500096. The cubic root of 189836537 is about 574.7247953356.

The spelling of 189836537 in words is "one hundred eighty-nine million, eight hundred thirty-six thousand, five hundred thirty-seven".