2158154347 has 2 divisors, whose sum is σ = 2158154348. Its totient is φ = 2158154346.

The previous prime is 2158154303. The next prime is 2158154359. The reversal of 2158154347 is 7434518512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158154347 is a prime.

It is not a weakly prime, because it can be changed into another prime (2158155347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079077173 + 1079077174.

It is an arithmetic number, because the mean of its divisors is an integer number (1079077174).

Almost surely, 2^2158154347 is an apocalyptic number.

2158154347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158154347 is an equidigital number, since it uses as much as digits as its factorization.

2158154347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 2158154347 is about 46455.9398462672. The cubic root of 2158154347 is about 1292.2925295803.

The spelling of 2158154347 in words is "two billion, one hundred fifty-eight million, one hundred fifty-four thousand, three hundred forty-seven".