1298670407 has 4 divisors (see below), whose sum is σ = 1298898216. Its totient is φ = 1298442600.

The previous prime is 1298670403. The next prime is 1298670421. The reversal of 1298670407 is 7040768921.

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

It is a cyclic number.

It is not a de Polignac number, because 1298670407 - 2² = 1298670403 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 (1298670403) 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, 105128 + ... + 116829.

It is an arithmetic number, because the mean of its divisors is an integer number (324724554).

Almost surely, 2^1298670407 is an apocalyptic number.

1298670407 is a deficient number, since it is larger than the sum of its proper divisors (227809).

1298670407 is an equidigital number, since it uses as much as digits as its factorization.

1298670407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227808.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 1298670407 is about 36037.0699003124. The cubic root of 1298670407 is about 1091.0206770784.

The spelling of 1298670407 in words is "one billion, two hundred ninety-eight million, six hundred seventy thousand, four hundred seven".