261383038 has 16 divisors (see below), whose sum is σ = 471669120. Its totient is φ = 106125336.

The previous prime is 261382999. The next prime is 261383071. The reversal of 261383038 is 830383162.

261383038 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 261382994 and 261383012.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 491056 + ... + 491587.

It is an arithmetic number, because the mean of its divisors is an integer number (29479320).

Almost surely, 2^261383038 is an apocalyptic number.

261383038 is a deficient number, since it is larger than the sum of its proper divisors (210286082).

261383038 is a wasteful number, since it uses less digits than its factorization.

261383038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982671.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 261383038 is about 16167.3448036466. The cubic root of 261383038 is about 639.3801273546.

The spelling of 261383038 in words is "two hundred sixty-one million, three hundred eighty-three thousand, thirty-eight".