2136954409 has 4 divisors (see below), whose sum is σ = 2137529680. Its totient is φ = 2136379140.

The previous prime is 2136954397. The next prime is 2136954419. The reversal of 2136954409 is 9044596312.

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 a de Polignac number, because none of the positive numbers 2^k-2136954409 is a prime.

It is a super-2 number, since 2×2136954409² = 9133148292289078562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136954419) 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, 282027 + ... + 289504.

It is an arithmetic number, because the mean of its divisors is an integer number (534382420).

Almost surely, 2^2136954409 is an apocalyptic number.

It is an amenable number.

2136954409 is a deficient number, since it is larger than the sum of its proper divisors (575271).

2136954409 is an equidigital number, since it uses as much as digits as its factorization.

2136954409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575270.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2136954409 is about 46227.2042092100. The cubic root of 2136954409 is about 1288.0471240378.

The spelling of 2136954409 in words is "two billion, one hundred thirty-six million, nine hundred fifty-four thousand, four hundred nine".