1954317559 has 2 divisors, whose sum is σ = 1954317560. Its totient is φ = 1954317558.

The previous prime is 1954317553. The next prime is 1954317581. The reversal of 1954317559 is 9557134591.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1954317559 - 2³ = 1954317551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1954317551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977158779 + 977158780.

It is an arithmetic number, because the mean of its divisors is an integer number (977158780).

Almost surely, 2^1954317559 is an apocalyptic number.

1954317559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954317559 is an equidigital number, since it uses as much as digits as its factorization.

1954317559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 850500, while the sum is 49.

The square root of 1954317559 is about 44207.6640301204. The cubic root of 1954317559 is about 1250.2543608236.

The spelling of 1954317559 in words is "one billion, nine hundred fifty-four million, three hundred seventeen thousand, five hundred fifty-nine".