261444162 has 16 divisors (see below), whose sum is σ = 597586752. Its totient is φ = 74698320.

The previous prime is 261444149. The next prime is 261444181.

It is a happy number.

261444162 is nontrivially palindromic in base 10.

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, 3112389 + ... + 3112472.

It is an arithmetic number, because the mean of its divisors is an integer number (37349172).

Almost surely, 2^261444162 is an apocalyptic number.

261444162 is an abundant number, since it is smaller than the sum of its proper divisors (336142590).

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

261444162 is a wasteful number, since it uses less digits than its factorization.

261444162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224873.

The product of its digits is 9216, while the sum is 30.

The square root of 261444162 is about 16169.2350468413. The cubic root of 261444162 is about 639.4299628058.

The spelling of 261444162 in words is "two hundred sixty-one million, four hundred forty-four thousand, one hundred sixty-two".