1298989810892 has 12 divisors (see below), whose sum is σ = 2273409868800. Its totient is φ = 649444134096.

The previous prime is 1298989810861. The next prime is 1298989810897. The reversal of 1298989810892 is 2980189898921.

It is not an unprimeable number, because it can be changed into a prime (1298989810897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12635243 + ... + 12737634.

It is an arithmetic number, because the mean of its divisors is an integer number (189450822400).

Almost surely, 2^{1298989810892} is an apocalyptic number.

It is an amenable number.

1298989810892 is a deficient number, since it is larger than the sum of its proper divisors (974420057908).

1298989810892 is a wasteful number, since it uses less digits than its factorization.

1298989810892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25385680 (or 25385678 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 74.

The spelling of 1298989810892 in words is "one trillion, two hundred ninety-eight billion, nine hundred eighty-nine million, eight hundred ten thousand, eight hundred ninety-two".