2259687397 has 4 divisors (see below), whose sum is σ = 2465113536. Its totient is φ = 2054261260.

The previous prime is 2259687389. The next prime is 2259687427. The reversal of 2259687397 is 7937869522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2259687397 - 2³ = 2259687389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2259687317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102713053 + ... + 102713074.

It is an arithmetic number, because the mean of its divisors is an integer number (616278384).

Almost surely, 2^2259687397 is an apocalyptic number.

It is an amenable number.

2259687397 is a deficient number, since it is larger than the sum of its proper divisors (205426139).

2259687397 is a wasteful number, since it uses less digits than its factorization.

2259687397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205426138.

The product of its digits is 11430720, while the sum is 58.

The square root of 2259687397 is about 47536.1693555549. The cubic root of 2259687397 is about 1312.2486091709.

The spelling of 2259687397 in words is "two billion, two hundred fifty-nine million, six hundred eighty-seven thousand, three hundred ninety-seven".