1973271540 has 48 divisors (see below), whose sum is σ = 5574074688. Its totient is φ = 521547264.

The previous prime is 1973271539. The next prime is 1973271557. The reversal of 1973271540 is 451723791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138742 + ... + 152301.

It is an arithmetic number, because the mean of its divisors is an integer number (116126556).

Almost surely, 2^1973271540 is an apocalyptic number.

1973271540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1973271540 is an abundant number, since it is smaller than the sum of its proper divisors (3600803148).

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

1973271540 is a wasteful number, since it uses less digits than its factorization.

1973271540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291168 (or 291166 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 1973271540 is about 44421.5211355937. The cubic root of 1973271540 is about 1254.2832348886.

The spelling of 1973271540 in words is "one billion, nine hundred seventy-three million, two hundred seventy-one thousand, five hundred forty".