1973153494840 has 32 divisors (see below), whose sum is σ = 4843194942960. Its totient is φ = 717510361600.

The previous prime is 1973153494813. The next prime is 1973153494853. The reversal of 1973153494840 is 484943513791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242219441 + ... + 2242220320.

Almost surely, 2^{1973153494840} is an apocalyptic number.

1973153494840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1973153494840 is an abundant number, since it is smaller than the sum of its proper divisors (2870041448120).

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

1973153494840 is a wasteful number, since it uses less digits than its factorization.

1973153494840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484439783 (or 4484439779 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 1973153494840 in words is "one trillion, nine hundred seventy-three billion, one hundred fifty-three million, four hundred ninety-four thousand, eight hundred forty".