1298258662 has 4 divisors (see below), whose sum is σ = 1947387996. Its totient is φ = 649129330.

The previous prime is 1298258639. The next prime is 1298258707. The reversal of 1298258662 is 2668528921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2668528921 = 32719 ⋅81559.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324564664 + ... + 324564667.

It is an arithmetic number, because the mean of its divisors is an integer number (486846999).

Almost surely, 2^1298258662 is an apocalyptic number.

1298258662 is a deficient number, since it is larger than the sum of its proper divisors (649129334).

1298258662 is an equidigital number, since it uses as much as digits as its factorization.

1298258662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649129333.

The product of its digits is 829440, while the sum is 49.

The square root of 1298258662 is about 36031.3566494519. The cubic root of 1298258662 is about 1090.9053617553.

The spelling of 1298258662 in words is "one billion, two hundred ninety-eight million, two hundred fifty-eight thousand, six hundred sixty-two".