1298265544 has 32 divisors (see below), whose sum is σ = 2559522240. Its totient is φ = 616158400.

The previous prime is 1298265481. The next prime is 1298265629. The reversal of 1298265544 is 4455628921.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 1298265494 and 1298265503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2827 + ... + 51034.

It is an arithmetic number, because the mean of its divisors is an integer number (79985070).

Almost surely, 2^1298265544 is an apocalyptic number.

It is an amenable number.

1298265544 is a deficient number, since it is larger than the sum of its proper divisors (1261256696).

1298265544 is a wasteful number, since it uses less digits than its factorization.

1298265544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54021 (or 54017 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 1298265544 is about 36031.4521494763. The cubic root of 1298265544 is about 1090.9072893623.

The spelling of 1298265544 in words is "one billion, two hundred ninety-eight million, two hundred sixty-five thousand, five hundred forty-four".