261948468 has 24 divisors (see below), whose sum is σ = 611481472. Its totient is φ = 87277824.

The previous prime is 261948451. The next prime is 261948509. The reversal of 261948468 is 864849162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41796 + ... + 47652.

Almost surely, 2^261948468 is an apocalyptic number.

It is an amenable number.

261948468 is an abundant number, since it is smaller than the sum of its proper divisors (349533004).

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

261948468 is a wasteful number, since it uses less digits than its factorization.

261948468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591 (or 9589 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 261948468 is about 16184.8221491618. The cubic root of 261948468 is about 639.8408360713.

The spelling of 261948468 in words is "two hundred sixty-one million, nine hundred forty-eight thousand, four hundred sixty-eight".