166901537 has 4 divisors (see below), whose sum is σ = 182074416. Its totient is φ = 151728660.

The previous prime is 166901521. The next prime is 166901549. The reversal of 166901537 is 735109661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166901537 - 2⁴ = 166901521 is a prime.

It is a super-2 number, since 2×166901537² = 55712246105924738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166901537.

It is not an unprimeable number, because it can be changed into a prime (166901557) 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, 7586423 + ... + 7586444.

It is an arithmetic number, because the mean of its divisors is an integer number (45518604).

Almost surely, 2^166901537 is an apocalyptic number.

It is an amenable number.

166901537 is a deficient number, since it is larger than the sum of its proper divisors (15172879).

166901537 is a wasteful number, since it uses less digits than its factorization.

166901537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172878.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 166901537 is about 12919.0377737663. The cubic root of 166901537 is about 550.5795950634.

The spelling of 166901537 in words is "one hundred sixty-six million, nine hundred one thousand, five hundred thirty-seven".