1298791904 has 12 divisors (see below), whose sum is σ = 2556996624. Its totient is φ = 649395936.

The previous prime is 1298791889. The next prime is 1298791927. The reversal of 1298791904 is 4091978921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20293592 + ... + 20293655.

It is an arithmetic number, because the mean of its divisors is an integer number (213083052).

Almost surely, 2^1298791904 is an apocalyptic number.

It is an amenable number.

1298791904 is a deficient number, since it is larger than the sum of its proper divisors (1258204720).

1298791904 is an equidigital number, since it uses as much as digits as its factorization.

1298791904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40587257 (or 40587249 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 1298791904 is about 36038.7555833994. The cubic root of 1298791904 is about 1091.0546994665.

The spelling of 1298791904 in words is "one billion, two hundred ninety-eight million, seven hundred ninety-one thousand, nine hundred four".