4168897489 has 3 divisors (see below), whose sum is σ = 4168962057. Its totient is φ = 4168832922.

The previous prime is 4168897457. The next prime is 4168897519. The reversal of 4168897489 is 9847988614.

The square root of 4168897489 is 64567.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4168897489 - 2⁵ = 4168897457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4168897489.

It is not an unprimeable number, because it can be changed into a prime (4168897409) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 32284 + ... + 96850.

It is an arithmetic number, because the mean of its divisors is an integer number (1389654019).

Almost surely, 2^4168897489 is an apocalyptic number.

4168897489 is the 64567-th square number.

4168897489 is the 32284-th centered octagonal number.

It is an amenable number.

4168897489 is a deficient number, since it is larger than the sum of its proper divisors (64568).

4168897489 is an frugal number, since it uses more digits than its factorization.

4168897489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129134 (or 64567 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 64.

The cubic root of 4168897489 is about 1609.4361011441.

Multiplying 4168897489 by its sum of digits (64), we get a square (266809439296 = 516536²).

The spelling of 4168897489 in words is "four billion, one hundred sixty-eight million, eight hundred ninety-seven thousand, four hundred eighty-nine".