37986161 has 8 divisors (see below), whose sum is σ = 39108840. Its totient is φ = 36868608.

The previous prime is 37986101. The next prime is 37986163. The reversal of 37986161 is 16168973.

It can be written as a sum of positive squares in 4 ways, for example, as 26214400 + 11771761 = 5120^2 + 3431^2 .

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 37986161 - 2⁶ = 37986097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37986163) 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, 17825 + ... + 19841.

It is an arithmetic number, because the mean of its divisors is an integer number (4888605).

Almost surely, 2^37986161 is an apocalyptic number.

It is an amenable number.

37986161 is a deficient number, since it is larger than the sum of its proper divisors (1122679).

37986161 is a wasteful number, since it uses less digits than its factorization.

37986161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563.

The product of its digits is 54432, while the sum is 41.

The square root of 37986161 is about 6163.2914096285. The cubic root of 37986161 is about 336.1567231125.

The spelling of 37986161 in words is "thirty-seven million, nine hundred eighty-six thousand, one hundred sixty-one".