869195001901 has 2 divisors, whose sum is σ = 869195001902. Its totient is φ = 869195001900.

The previous prime is 869195001877. The next prime is 869195001929. The reversal of 869195001901 is 109100591968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465804885001 + 403390116900 = 682499^2 + 635130^2 .

It is a cyclic number.

It is not a de Polignac number, because 869195001901 - 2¹¹ = 869194999853 is a prime.

It is a super-2 number, since 2×869195001901² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869195001931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434597500950 + 434597500951.

It is an arithmetic number, because the mean of its divisors is an integer number (434597500951).

Almost surely, 2^869195001901 is an apocalyptic number.

It is an amenable number.

869195001901 is a deficient number, since it is larger than the sum of its proper divisors (1).

869195001901 is an equidigital number, since it uses as much as digits as its factorization.

869195001901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 49.

The spelling of 869195001901 in words is "eight hundred sixty-nine billion, one hundred ninety-five million, one thousand, nine hundred one".