1953879973960 has 32 divisors (see below), whose sum is σ = 4397954859000. Its totient is φ = 781245337600.

The previous prime is 1953879973949. The next prime is 1953879974003. The reversal of 1953879973960 is 693799783591.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1596417088036 + 357462885924 = 1263494^2 + 597882^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9479641 + ... + 9683560.

Almost surely, 2^{1953879973960} is an apocalyptic number.

1953879973960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1953879973960 is an abundant number, since it is smaller than the sum of its proper divisors (2444074885040).

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

1953879973960 is a wasteful number, since it uses less digits than its factorization.

1953879973960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19165761 (or 19165757 counting only the distinct ones).

The product of its (nonzero) digits is 694416240, while the sum is 76.

The spelling of 1953879973960 in words is "one trillion, nine hundred fifty-three billion, eight hundred seventy-nine million, nine hundred seventy-three thousand, nine hundred sixty".