261437934 has 16 divisors (see below), whose sum is σ = 553633488. Its totient is φ = 82019712.

The previous prime is 261437921. The next prime is 261437959. The reversal of 261437934 is 439734162.

261437934 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261437892 and 261437901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281457 + ... + 1281660.

It is an arithmetic number, because the mean of its divisors is an integer number (34602093).

Almost surely, 2^261437934 is an apocalyptic number.

261437934 is an abundant number, since it is smaller than the sum of its proper divisors (292195554).

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

261437934 is a wasteful number, since it uses less digits than its factorization.

261437934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563139.

The product of its digits is 108864, while the sum is 39.

The square root of 261437934 is about 16169.0424577339. The cubic root of 261437934 is about 639.4248853655.

The spelling of 261437934 in words is "two hundred sixty-one million, four hundred thirty-seven thousand, nine hundred thirty-four".