1398479885952 has 32 divisors (see below), whose sum is σ = 3714712198080. Its totient is φ = 466159961856.

The previous prime is 1398479885911. The next prime is 1398479885953. The reversal of 1398479885952 is 2595889748931.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1398479885953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1820936968 + ... + 1820937735.

It is an arithmetic number, because the mean of its divisors is an integer number (116084756190).

Almost surely, 2^{1398479885952} is an apocalyptic number.

1398479885952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398479885952 is an abundant number, since it is smaller than the sum of its proper divisors (2316232312128).

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

1398479885952 is an equidigital number, since it uses as much as digits as its factorization.

1398479885952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641874720 (or 3641874708 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 78.

The spelling of 1398479885952 in words is "one trillion, three hundred ninety-eight billion, four hundred seventy-nine million, eight hundred eighty-five thousand, nine hundred fifty-two".