261954134 has 8 divisors (see below), whose sum is σ = 423156720. Its totient is φ = 120901896.

The previous prime is 261954131. The next prime is 261954163. The reversal of 261954134 is 431459162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 261954094 and 261954103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261954131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5037554 + ... + 5037605.

It is an arithmetic number, because the mean of its divisors is an integer number (52894590).

Almost surely, 2^261954134 is an apocalyptic number.

261954134 is a deficient number, since it is larger than the sum of its proper divisors (161202586).

261954134 is a wasteful number, since it uses less digits than its factorization.

261954134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075174.

The product of its digits is 25920, while the sum is 35.

The square root of 261954134 is about 16184.9971887548. The cubic root of 261954134 is about 639.8454493349.

The spelling of 261954134 in words is "two hundred sixty-one million, nine hundred fifty-four thousand, one hundred thirty-four".