261404162 has 16 divisors (see below), whose sum is σ = 400090752. Its totient is φ = 128047920.

The previous prime is 261404137. The next prime is 261404197.

261404162 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, 95213 + ... + 97919.

It is an arithmetic number, because the mean of its divisors is an integer number (25005672).

Almost surely, 2^261404162 is an apocalyptic number.

261404162 is a deficient number, since it is larger than the sum of its proper divisors (138686590).

261404162 is a wasteful number, since it uses less digits than its factorization.

261404162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 261404162 is about 16167.9980826322. The cubic root of 261404162 is about 639.3973509945.

The spelling of 261404162 in words is "two hundred sixty-one million, four hundred four thousand, one hundred sixty-two".