1261112673 has 8 divisors (see below), whose sum is σ = 1682249536. Its totient is φ = 840358800.

The previous prime is 1261112663. The next prime is 1261112693. The reversal of 1261112673 is 3762111621.

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

It is not a de Polignac number, because 1261112673 - 2¹² = 1261108577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1261112673.

It is not an unprimeable number, because it can be changed into a prime (1261112623) 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, 87973 + ... + 101298.

It is an arithmetic number, because the mean of its divisors is an integer number (210281192).

Almost surely, 2^1261112673 is an apocalyptic number.

It is an amenable number.

1261112673 is a deficient number, since it is larger than the sum of its proper divisors (421136863).

1261112673 is a wasteful number, since it uses less digits than its factorization.

1261112673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191495.

The product of its digits is 3024, while the sum is 30.

The square root of 1261112673 is about 35512.1482453540. The cubic root of 1261112673 is about 1080.4001355123.

The spelling of 1261112673 in words is "one billion, two hundred sixty-one million, one hundred twelve thousand, six hundred seventy-three".