1008135797 has 2 divisors, whose sum is σ = 1008135798. Its totient is φ = 1008135796.

The previous prime is 1008135719. The next prime is 1008135803. The reversal of 1008135797 is 7975318001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802815556 + 205320241 = 28334^2 + 14329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1008135797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1008135197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504067898 + 504067899.

It is an arithmetic number, because the mean of its divisors is an integer number (504067899).

Almost surely, 2^1008135797 is an apocalyptic number.

It is an amenable number.

1008135797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008135797 is an equidigital number, since it uses as much as digits as its factorization.

1008135797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 1008135797 is about 31751.1542624831. The cubic root of 1008135797 is about 1002.7046108190.

The spelling of 1008135797 in words is "one billion, eight million, one hundred thirty-five thousand, seven hundred ninety-seven".