259985190 has 16 divisors (see below), whose sum is σ = 623964528. Its totient is φ = 69329376.

The previous prime is 259985179. The next prime is 259985191. The reversal of 259985190 is 91589952.

It is a happy number.

It is a super-2 number, since 2×259985190² = 135184598038672200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259985191) 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, 4333057 + ... + 4333116.

It is an arithmetic number, because the mean of its divisors is an integer number (38997783).

Almost surely, 2^259985190 is an apocalyptic number.

259985190 is an abundant number, since it is smaller than the sum of its proper divisors (363979338).

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

259985190 is a wasteful number, since it uses less digits than its factorization.

259985190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666183.

The product of its (nonzero) digits is 291600, while the sum is 48.

The square root of 259985190 is about 16124.0562514524. The cubic root of 259985190 is about 638.2383110804.

The spelling of 259985190 in words is "two hundred fifty-nine million, nine hundred eighty-five thousand, one hundred ninety".