1298897463 has 4 divisors (see below), whose sum is σ = 1731863288. Its totient is φ = 865931640.

The previous prime is 1298897459. The next prime is 1298897497. The reversal of 1298897463 is 3647988921.

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

It is not a de Polignac number, because 1298897463 - 2² = 1298897459 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 (1298899463) 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, 216482908 + ... + 216482913.

It is an arithmetic number, because the mean of its divisors is an integer number (432965822).

Almost surely, 2^1298897463 is an apocalyptic number.

1298897463 is a deficient number, since it is larger than the sum of its proper divisors (432965825).

1298897463 is an equidigital number, since it uses as much as digits as its factorization.

1298897463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432965824.

The product of its digits is 5225472, while the sum is 57.

The square root of 1298897463 is about 36040.2200742448. The cubic root of 1298897463 is about 1091.0842570686.

The spelling of 1298897463 in words is "one billion, two hundred ninety-eight million, eight hundred ninety-seven thousand, four hundred sixty-three".