1298645149340 has 288 divisors, whose sum is σ = 3623846446080. Its totient is φ = 381861596160.

The previous prime is 1298645149309. The next prime is 1298645149343. The reversal of 1298645149340 is 439415468921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298645149343) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28419431 + ... + 28465089.

It is an arithmetic number, because the mean of its divisors is an integer number (12582800160).

Almost surely, 2^{1298645149340} is an apocalyptic number.

1298645149340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298645149340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811923223040).

1298645149340 is an abundant number, since it is smaller than the sum of its proper divisors (2325201296740).

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

1298645149340 is a wasteful number, since it uses less digits than its factorization.

1298645149340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45793 (or 45780 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 1298645149340 in words is "one trillion, two hundred ninety-eight billion, six hundred forty-five million, one hundred forty-nine thousand, three hundred forty".