261958492 has 6 divisors (see below), whose sum is σ = 458427368. Its totient is φ = 130979244.

The previous prime is 261958481. The next prime is 261958493. The reversal of 261958492 is 294859162.

261958492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261958493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32744808 + ... + 32744815.

Almost surely, 2^261958492 is an apocalyptic number.

It is an amenable number.

261958492 is a deficient number, since it is larger than the sum of its proper divisors (196468876).

261958492 is a wasteful number, since it uses less digits than its factorization.

261958492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65489627 (or 65489625 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 261958492 is about 16185.1318190492. The cubic root of 261958492 is about 639.8489975782.

It can be divided in two parts, 261958 and 492, that added together give a triangular number (262450 = T₇₂₄).

The spelling of 261958492 in words is "two hundred sixty-one million, nine hundred fifty-eight thousand, four hundred ninety-two".