2146436887 has 8 divisors (see below), whose sum is σ = 2453657472. Its totient is φ = 1839363000.

The previous prime is 2146436861. The next prime is 2146436893. The reversal of 2146436887 is 7886346412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2146436887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2146436887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146431887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3289 + ... + 65602.

It is an arithmetic number, because the mean of its divisors is an integer number (306707184).

Almost surely, 2^2146436887 is an apocalyptic number.

2146436887 is a deficient number, since it is larger than the sum of its proper divisors (307220585).

2146436887 is an equidigital number, since it uses as much as digits as its factorization.

2146436887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73349.

The product of its digits is 1548288, while the sum is 49.

The square root of 2146436887 is about 46329.6545098277. The cubic root of 2146436887 is about 1289.9494976523.

The spelling of 2146436887 in words is "two billion, one hundred forty-six million, four hundred thirty-six thousand, eight hundred eighty-seven".