2195663137 has 4 divisors (see below), whose sum is σ = 2197381120. Its totient is φ = 2193945156.

The previous prime is 2195663131. The next prime is 2195663147. The reversal of 2195663137 is 7313665912.

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 2195663137 - 2¹⁵ = 2195630369 is a prime.

It is a super-2 number, since 2×2195663137² = 9641873222361361538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2195663093 and 2195663102.

It is not an unprimeable number, because it can be changed into a prime (2195663131) 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, 857073 + ... + 859630.

It is an arithmetic number, because the mean of its divisors is an integer number (549345280).

Almost surely, 2^2195663137 is an apocalyptic number.

It is an amenable number.

2195663137 is a deficient number, since it is larger than the sum of its proper divisors (1717983).

2195663137 is a wasteful number, since it uses less digits than its factorization.

2195663137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717982.

The product of its digits is 204120, while the sum is 43.

The square root of 2195663137 is about 46857.9036769679. The cubic root of 2195663137 is about 1299.7362654340.

The spelling of 2195663137 in words is "two billion, one hundred ninety-five million, six hundred sixty-three thousand, one hundred thirty-seven".