2197665126 has 12 divisors (see below), whose sum is σ = 4761607812. Its totient is φ = 732555036.

The previous prime is 2197665103. The next prime is 2197665133. The reversal of 2197665126 is 6215667912.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61046236 + ... + 61046271.

It is an arithmetic number, because the mean of its divisors is an integer number (396800651).

Almost surely, 2^2197665126 is an apocalyptic number.

2197665126 is an abundant number, since it is smaller than the sum of its proper divisors (2563942686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2197665126 is a wasteful number, since it uses less digits than its factorization.

2197665126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122092515 (or 122092512 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2197665126 is about 46879.2611503210. The cubic root of 2197665126 is about 1300.1311753236.

The spelling of 2197665126 in words is "two billion, one hundred ninety-seven million, six hundred sixty-five thousand, one hundred twenty-six".