2154658447 has 2 divisors, whose sum is σ = 2154658448. Its totient is φ = 2154658446.

The previous prime is 2154658439. The next prime is 2154658487. The reversal of 2154658447 is 7448564512.

2154658447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154658447 - 2³ = 2154658439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154658397 and 2154658406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154658487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077329223 + 1077329224.

It is an arithmetic number, because the mean of its divisors is an integer number (1077329224).

Almost surely, 2^2154658447 is an apocalyptic number.

2154658447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154658447 is an equidigital number, since it uses as much as digits as its factorization.

2154658447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 46.

The square root of 2154658447 is about 46418.2986224183. The cubic root of 2154658447 is about 1291.5943763931.

The spelling of 2154658447 in words is "two billion, one hundred fifty-four million, six hundred fifty-eight thousand, four hundred forty-seven".