2186726157 has 36 divisors (see below), whose sum is σ = 3967847520. Its totient is φ = 1135957680.

The previous prime is 2186726147. The next prime is 2186726197. The reversal of 2186726157 is 7516276812.

2186726157 is a `hidden beast` number, since 21 + 8 + 6 + 7 + 2 + 615 + 7 = 666.

It is not a de Polignac number, because 2186726157 - 2⁷ = 2186726029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186726117) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 135807 + ... + 151052.

Almost surely, 2^2186726157 is an apocalyptic number.

It is an amenable number.

2186726157 is a deficient number, since it is larger than the sum of its proper divisors (1781121363).

2186726157 is a wasteful number, since it uses less digits than its factorization.

2186726157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286894 (or 286880 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 2186726157 is about 46762.4438732622. The cubic root of 2186726157 is about 1297.9704340675.

The spelling of 2186726157 in words is "two billion, one hundred eighty-six million, seven hundred twenty-six thousand, one hundred fifty-seven".