1298874643 has 8 divisors (see below), whose sum is σ = 1424784816. Its totient is φ = 1174269600.

The previous prime is 1298874631. The next prime is 1298874683. The reversal of 1298874643 is 3464788921.

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 1298874643 - 2⁹ = 1298874131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298874623) 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, 324196 + ... + 328177.

It is an arithmetic number, because the mean of its divisors is an integer number (178098102).

Almost surely, 2^1298874643 is an apocalyptic number.

1298874643 is a deficient number, since it is larger than the sum of its proper divisors (125910173).

1298874643 is a wasteful number, since it uses less digits than its factorization.

1298874643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652565.

The product of its digits is 2322432, while the sum is 52.

The square root of 1298874643 is about 36039.9034821127. The cubic root of 1298874643 is about 1091.0778673703.

The spelling of 1298874643 in words is "one billion, two hundred ninety-eight million, eight hundred seventy-four thousand, six hundred forty-three".