2686146957 has 12 divisors (see below), whose sum is σ = 4178451004. Its totient is φ = 1653013440.

The previous prime is 2686146943. The next prime is 2686146959. The reversal of 2686146957 is 7596416862.

It can be written as a sum of positive squares in 2 ways, for example, as 649791081 + 2036355876 = 25491^2 + 45126^2 .

It is not a de Polignac number, because 2686146957 - 2⁶ = 2686146893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686146959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11479144 + ... + 11479377.

Almost surely, 2^2686146957 is an apocalyptic number.

It is an amenable number.

2686146957 is a deficient number, since it is larger than the sum of its proper divisors (1492304047).

2686146957 is a wasteful number, since it uses less digits than its factorization.

2686146957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22958540 (or 22958537 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 2686146957 is about 51828.0518348896. The cubic root of 2686146957 is about 1390.0910792070.

The spelling of 2686146957 in words is "two billion, six hundred eighty-six million, one hundred forty-six thousand, nine hundred fifty-seven".