397852195719 has 16 divisors (see below), whose sum is σ = 603854717184. Its totient is φ = 230638953600.

The previous prime is 397852195681. The next prime is 397852195747. The reversal of 397852195719 is 917591258793.

It is not a de Polignac number, because 397852195719 - 2⁹ = 397852195207 is a prime.

It is a super-2 number, since 2×397852195719² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397852195719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397852195789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262088962 + ... + 262090479.

It is an arithmetic number, because the mean of its divisors is an integer number (37740919824).

Almost surely, 2^397852195719 is an apocalyptic number.

397852195719 is a deficient number, since it is larger than the sum of its proper divisors (206002521465).

397852195719 is a wasteful number, since it uses less digits than its factorization.

397852195719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524179478.

The product of its digits is 42865200, while the sum is 66.

The spelling of 397852195719 in words is "three hundred ninety-seven billion, eight hundred fifty-two million, one hundred ninety-five thousand, seven hundred nineteen".