1298666652 has 48 divisors (see below), whose sum is σ = 3241596960. Its totient is φ = 403218432.

The previous prime is 1298666651. The next prime is 1298666671. The reversal of 1298666652 is 2566668921.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1298666595 and 1298666604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298666651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13027 + ... + 52602.

It is an arithmetic number, because the mean of its divisors is an integer number (67533270).

Almost surely, 2^1298666652 is an apocalyptic number.

1298666652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1298666652 is an abundant number, since it is smaller than the sum of its proper divisors (1942930308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1298666652 is a wasteful number, since it uses less digits than its factorization.

1298666652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65750 (or 65748 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 1298666652 is about 36037.0178011444. The cubic root of 1298666652 is about 1091.0196255448.

The spelling of 1298666652 in words is "one billion, two hundred ninety-eight million, six hundred sixty-six thousand, six hundred fifty-two".