259618641 has 16 divisors (see below), whose sum is σ = 380221440. Its totient is φ = 156839760.

The previous prime is 259618637. The next prime is 259618651. The reversal of 259618641 is 146816952.

It is not a de Polignac number, because 259618641 - 2² = 259618637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 259618593 and 259618602.

It is not an unprimeable number, because it can be changed into a prime (259618621) 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, 97705 + ... + 100326.

It is an arithmetic number, because the mean of its divisors is an integer number (23763840).

Almost surely, 2^259618641 is an apocalyptic number.

It is an amenable number.

259618641 is a deficient number, since it is larger than the sum of its proper divisors (120602799).

259618641 is a wasteful number, since it uses less digits than its factorization.

259618641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198076.

The product of its digits is 103680, while the sum is 42.

The square root of 259618641 is about 16112.6857165402. The cubic root of 259618641 is about 637.9382226455.

The spelling of 259618641 in words is "two hundred fifty-nine million, six hundred eighteen thousand, six hundred forty-one".