2136195961 has 3 divisors (see below), whose sum is σ = 2136242181. Its totient is φ = 2136149742.

The previous prime is 2136195923. The next prime is 2136195977. The reversal of 2136195961 is 1695916312.

The square root of 2136195961 is 46219.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2136195961 - 2¹⁵ = 2136163193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136190961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23110 + ... + 69328.

It is an arithmetic number, because the mean of its divisors is an integer number (712080727).

Almost surely, 2^2136195961 is an apocalyptic number.

2136195961 is the 46219-th square number.

2136195961 is the 23110-th centered octagonal number.

It is an amenable number.

2136195961 is a deficient number, since it is larger than the sum of its proper divisors (46220).

2136195961 is an frugal number, since it uses more digits than its factorization.

2136195961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92438 (or 46219 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The cubic root of 2136195961 is about 1287.8947214160.

The spelling of 2136195961 in words is "two billion, one hundred thirty-six million, one hundred ninety-five thousand, nine hundred sixty-one".