1298204091 has 20 divisors (see below), whose sum is σ = 1946481504. Its totient is φ = 862261200.

The previous prime is 1298204057. The next prime is 1298204093. The reversal of 1298204091 is 1904028921.

It is not a de Polignac number, because 1298204091 - 2²⁷ = 1163986363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1298204093) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7620 + ... + 51521.

Almost surely, 2^1298204091 is an apocalyptic number.

1298204091 is a deficient number, since it is larger than the sum of its proper divisors (648277413).

1298204091 is an equidigital number, since it uses as much as digits as its factorization.

1298204091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59424 (or 59415 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1298204091 is about 36030.5993705350. The cubic root of 1298204091 is about 1090.8900765038.

The spelling of 1298204091 in words is "one billion, two hundred ninety-eight million, two hundred four thousand, ninety-one".