261151834 has 16 divisors (see below), whose sum is σ = 401516928. Its totient is φ = 127333152.

The previous prime is 261151831. The next prime is 261151859. The reversal of 261151834 is 438151162.

It is a junction number, because it is equal to n+sod(n) for n = 261151796 and 261151805.

It is not an unprimeable number, because it can be changed into a prime (261151831) 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, 21694 + ... + 31510.

It is an arithmetic number, because the mean of its divisors is an integer number (25094808).

Almost surely, 2^261151834 is an apocalyptic number.

261151834 is a deficient number, since it is larger than the sum of its proper divisors (140365094).

261151834 is a wasteful number, since it uses less digits than its factorization.

261151834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10149.

The product of its digits is 5760, while the sum is 31.

The square root of 261151834 is about 16160.1928825123. The cubic root of 261151834 is about 639.1915524418.

It can be divided in two parts, 2611 and 51834, that added together give a palindrome (54445).

The spelling of 261151834 in words is "two hundred sixty-one million, one hundred fifty-one thousand, eight hundred thirty-four".