261413374 has 4 divisors (see below), whose sum is σ = 392120064. Its totient is φ = 130706686.

The previous prime is 261413357. The next prime is 261413401. The reversal of 261413374 is 473314162.

261413374 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65353342 + ... + 65353345.

It is an arithmetic number, because the mean of its divisors is an integer number (98030016).

Almost surely, 2^261413374 is an apocalyptic number.

261413374 is a deficient number, since it is larger than the sum of its proper divisors (130706690).

261413374 is a wasteful number, since it uses less digits than its factorization.

261413374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130706689.

The product of its digits is 12096, while the sum is 31.

The square root of 261413374 is about 16168.2829638771. The cubic root of 261413374 is about 639.4048617895.

The spelling of 261413374 in words is "two hundred sixty-one million, four hundred thirteen thousand, three hundred seventy-four".