1955317523 has 2 divisors, whose sum is σ = 1955317524. Its totient is φ = 1955317522.

The previous prime is 1955317513. The next prime is 1955317541. The reversal of 1955317523 is 3257135591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1955317523 - 2⁶ = 1955317459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1955317513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977658761 + 977658762.

It is an arithmetic number, because the mean of its divisors is an integer number (977658762).

Almost surely, 2^1955317523 is an apocalyptic number.

1955317523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955317523 is an equidigital number, since it uses as much as digits as its factorization.

1955317523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141750, while the sum is 41.

The square root of 1955317523 is about 44218.9724326561. The cubic root of 1955317523 is about 1250.4675633258.

The spelling of 1955317523 in words is "one billion, nine hundred fifty-five million, three hundred seventeen thousand, five hundred twenty-three".