1298640882 has 32 divisors (see below), whose sum is σ = 3238170624. Its totient is φ = 337309200.

The previous prime is 1298640869. The next prime is 1298640887. The reversal of 1298640882 is 2880468921.

It is not an unprimeable number, because it can be changed into a prime (1298640887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1404994 + ... + 1405917.

It is an arithmetic number, because the mean of its divisors is an integer number (101192832).

Almost surely, 2^1298640882 is an apocalyptic number.

1298640882 is an abundant number, since it is smaller than the sum of its proper divisors (1939529742).

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

1298640882 is a wasteful number, since it uses less digits than its factorization.

1298640882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810934.

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 1298640882 is about 36036.6602503617. The cubic root of 1298640882 is about 1091.0124089735.

The spelling of 1298640882 in words is "one billion, two hundred ninety-eight million, six hundred forty thousand, eight hundred eighty-two".