1298394580 has 24 divisors (see below), whose sum is σ = 3116147328. Its totient is φ = 445163808.

The previous prime is 1298394563. The next prime is 1298394649. The reversal of 1298394580 is 854938921.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4636984 + ... + 4637263.

It is an arithmetic number, because the mean of its divisors is an integer number (129839472).

Almost surely, 2^1298394580 is an apocalyptic number.

1298394580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298394580 is an abundant number, since it is smaller than the sum of its proper divisors (1817752748).

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

1298394580 is a wasteful number, since it uses less digits than its factorization.

1298394580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9274263 (or 9274261 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 1298394580 is about 36033.2427072558. The cubic root of 1298394580 is about 1090.9434303122.

The spelling of 1298394580 in words is "one billion, two hundred ninety-eight million, three hundred ninety-four thousand, five hundred eighty".