261814130 has 16 divisors (see below), whose sum is σ = 472556160. Its totient is φ = 104438832.

The previous prime is 261814081. The next prime is 261814153. The reversal of 261814130 is 31418162.

It is a self number, because there is not a number n which added to its sum of digits gives 261814130.

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 7 ways as a sum of consecutive naturals, for example, 32000 + ... + 39339.

It is an arithmetic number, because the mean of its divisors is an integer number (29534760).

Almost surely, 2^261814130 is an apocalyptic number.

261814130 is a deficient number, since it is larger than the sum of its proper divisors (210742030).

261814130 is a wasteful number, since it uses less digits than its factorization.

261814130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71713.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 261814130 is about 16180.6714941006. The cubic root of 261814130 is about 639.7314384267.

The spelling of 261814130 in words is "two hundred sixty-one million, eight hundred fourteen thousand, one hundred thirty".