2159765497 has 8 divisors (see below), whose sum is σ = 2180017440. Its totient is φ = 2139533760.

The previous prime is 2159765483. The next prime is 2159765513. The reversal of 2159765497 is 7945679512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2159765497 - 2¹⁹ = 2159241209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159762497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287722 + ... + 295132.

It is an arithmetic number, because the mean of its divisors is an integer number (272502180).

Almost surely, 2^2159765497 is an apocalyptic number.

It is an amenable number.

2159765497 is a deficient number, since it is larger than the sum of its proper divisors (20251943).

2159765497 is a wasteful number, since it uses less digits than its factorization.

2159765497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103.

The product of its digits is 4762800, while the sum is 55.

The square root of 2159765497 is about 46473.2772354178. The cubic root of 2159765497 is about 1292.6140325670.

The spelling of 2159765497 in words is "two billion, one hundred fifty-nine million, seven hundred sixty-five thousand, four hundred ninety-seven".