166961837 has 8 divisors (see below), whose sum is σ = 192597696. Its totient is φ = 141772032.

The previous prime is 166961803. The next prime is 166961843. The reversal of 166961837 is 738169661.

It is a happy number.

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 166961837 - 2⁸ = 166961581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166961791 and 166961800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166961857) 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, 110708 + ... + 112205.

It is an arithmetic number, because the mean of its divisors is an integer number (24074712).

Almost surely, 2^166961837 is an apocalyptic number.

It is an amenable number.

166961837 is a deficient number, since it is larger than the sum of its proper divisors (25635859).

166961837 is a wasteful number, since it uses less digits than its factorization.

166961837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223027.

The product of its digits is 326592, while the sum is 47.

The square root of 166961837 is about 12921.3713281524. The cubic root of 166961837 is about 550.6458935384.

The spelling of 166961837 in words is "one hundred sixty-six million, nine hundred sixty-one thousand, eight hundred thirty-seven".