259192494 has 64 divisors (see below), whose sum is σ = 632436480. Its totient is φ = 78032160.

The previous prime is 259192481. The next prime is 259192513. The reversal of 259192494 is 494291952.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95484 + ... + 98160.

It is an arithmetic number, because the mean of its divisors is an integer number (9881820).

Almost surely, 2^259192494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259192494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316218240).

259192494 is an abundant number, since it is smaller than the sum of its proper divisors (373243986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259192494 is a wasteful number, since it uses less digits than its factorization.

259192494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862 (or 2856 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 259192494 is about 16099.4563262242. The cubic root of 259192494 is about 637.5889868859.

The spelling of 259192494 in words is "two hundred fifty-nine million, one hundred ninety-two thousand, four hundred ninety-four".