166537851 has 8 divisors (see below), whose sum is σ = 228051984. Its totient is φ = 108024480.

The previous prime is 166537817. The next prime is 166537853. The reversal of 166537851 is 158735661.

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

It is not a de Polignac number, because 166537851 - 2¹⁰ = 166536827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166537853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750060 + ... + 750281.

It is an arithmetic number, because the mean of its divisors is an integer number (28506498).

Almost surely, 2^166537851 is an apocalyptic number.

166537851 is a deficient number, since it is larger than the sum of its proper divisors (61514133).

166537851 is a wasteful number, since it uses less digits than its factorization.

166537851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500381.

The product of its digits is 151200, while the sum is 42.

The square root of 166537851 is about 12904.9545136742. The cubic root of 166537851 is about 550.1793916198.

The spelling of 166537851 in words is "one hundred sixty-six million, five hundred thirty-seven thousand, eight hundred fifty-one".