1298773490 has 64 divisors (see below), whose sum is σ = 2743372800. Its totient is φ = 433507776.

The previous prime is 1298773471. The next prime is 1298773507. The reversal of 1298773490 is 943778921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440441 + ... + 443379.

It is an arithmetic number, because the mean of its divisors is an integer number (42865200).

Almost surely, 2^1298773490 is an apocalyptic number.

1298773490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1298773490 is an abundant number, since it is smaller than the sum of its proper divisors (1444599310).

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

1298773490 is a wasteful number, since it uses less digits than its factorization.

1298773490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 1298773490 is about 36038.5001075239. The cubic root of 1298773490 is about 1091.0495431936.

The spelling of 1298773490 in words is "one billion, two hundred ninety-eight million, seven hundred seventy-three thousand, four hundred ninety".