1298489431 has 8 divisors (see below), whose sum is σ = 1380366000. Its totient is φ = 1217966400.

The previous prime is 1298489429. The next prime is 1298489473. The reversal of 1298489431 is 1349848921.

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 1298489431 - 2¹ = 1298489429 is a prime.

It is a super-2 number, since 2×1298489431² = 3372149604837407522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298489411) 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, 336406 + ... + 340243.

It is an arithmetic number, because the mean of its divisors is an integer number (172545750).

Almost surely, 2^1298489431 is an apocalyptic number.

1298489431 is a deficient number, since it is larger than the sum of its proper divisors (81876569).

1298489431 is a wasteful number, since it uses less digits than its factorization.

1298489431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676769.

The product of its digits is 497664, while the sum is 49.

The square root of 1298489431 is about 36034.5588428664. The cubic root of 1298489431 is about 1090.9699950553.

The spelling of 1298489431 in words is "one billion, two hundred ninety-eight million, four hundred eighty-nine thousand, four hundred thirty-one".