1298909274 has 64 divisors (see below), whose sum is σ = 3016863360. Its totient is φ = 369377280.

The previous prime is 1298909263. The next prime is 1298909279. The reversal of 1298909274 is 4729098921.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1298909279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50074 + ... + 71450.

It is an arithmetic number, because the mean of its divisors is an integer number (47138490).

Almost surely, 2^1298909274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298909274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508431680).

1298909274 is an abundant number, since it is smaller than the sum of its proper divisors (1717954086).

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

1298909274 is a wasteful number, since it uses less digits than its factorization.

1298909274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21455.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1298909274 is about 36040.3839324722. The cubic root of 1298909274 is about 1091.0875641700.

The spelling of 1298909274 in words is "one billion, two hundred ninety-eight million, nine hundred nine thousand, two hundred seventy-four".