1261674853 has 8 divisors (see below), whose sum is σ = 1268551872. Its totient is φ = 1254809856.

The previous prime is 1261674851. The next prime is 1261674863. The reversal of 1261674853 is 3584761621.

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

It is a cyclic number.

It is not a de Polignac number, because 1261674853 - 2¹ = 1261674851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261674851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273976 + ... + 278542.

It is an arithmetic number, because the mean of its divisors is an integer number (158568984).

Almost surely, 2^1261674853 is an apocalyptic number.

It is an amenable number.

1261674853 is a deficient number, since it is larger than the sum of its proper divisors (6877019).

1261674853 is a wasteful number, since it uses less digits than its factorization.

1261674853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011.

The product of its digits is 241920, while the sum is 43.

The square root of 1261674853 is about 35520.0626829402. The cubic root of 1261674853 is about 1080.5606522609.

The spelling of 1261674853 in words is "one billion, two hundred sixty-one million, six hundred seventy-four thousand, eight hundred fifty-three".