261295834 has 4 divisors (see below), whose sum is σ = 391943754. Its totient is φ = 130647916.

The previous prime is 261295823. The next prime is 261295849. The reversal of 261295834 is 438592162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 203490225 + 57805609 = 14265^2 + 7603^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65323957 + ... + 65323960.

Almost surely, 2^261295834 is an apocalyptic number.

261295834 is a deficient number, since it is larger than the sum of its proper divisors (130647920).

261295834 is a wasteful number, since it uses less digits than its factorization.

261295834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130647919.

The product of its digits is 103680, while the sum is 40.

The square root of 261295834 is about 16164.6476608678. The cubic root of 261295834 is about 639.3090149790.

The spelling of 261295834 in words is "two hundred sixty-one million, two hundred ninety-five thousand, eight hundred thirty-four".