1298997546 has 48 divisors (see below), whose sum is σ = 3296907360. Its totient is φ = 337401120.

The previous prime is 1298997533. The next prime is 1298997563. The reversal of 1298997546 is 6457998921.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298997546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197601 + ... + 204068.

It is an arithmetic number, because the mean of its divisors is an integer number (68685570).

Almost surely, 2^1298997546 is an apocalyptic number.

1298997546 is an abundant number, since it is smaller than the sum of its proper divisors (1997909814).

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

1298997546 is a wasteful number, since it uses less digits than its factorization.

1298997546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401699 (or 401692 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 60.

The square root of 1298997546 is about 36041.6085379107. The cubic root of 1298997546 is about 1091.1122798557.

The spelling of 1298997546 in words is "one billion, two hundred ninety-eight million, nine hundred ninety-seven thousand, five hundred forty-six".