654101449 has 2 divisors, whose sum is σ = 654101450. Its totient is φ = 654101448.

The previous prime is 654101447. The next prime is 654101473. The reversal of 654101449 is 944101456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556724025 + 97377424 = 23595^2 + 9868^2 .

It is a cyclic number.

It is not a de Polignac number, because 654101449 - 2¹ = 654101447 is a prime.

Together with 654101447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (654101443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327050724 + 327050725.

It is an arithmetic number, because the mean of its divisors is an integer number (327050725).

Almost surely, 2^654101449 is an apocalyptic number.

It is an amenable number.

654101449 is a deficient number, since it is larger than the sum of its proper divisors (1).

654101449 is an equidigital number, since it uses as much as digits as its factorization.

654101449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 654101449 is about 25575.4071130842. The cubic root of 654101449 is about 868.0572534916.

The spelling of 654101449 in words is "six hundred fifty-four million, one hundred one thousand, four hundred forty-nine".