1973790720 has 576 divisors, whose sum is σ = 7842744000. Its totient is φ = 470384640.

The previous prime is 1973790703. The next prime is 1973790743. The reversal of 1973790720 is 270973791.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33454051 + ... + 33454109.

It is an arithmetic number, because the mean of its divisors is an integer number (13615875).

Almost surely, 2^1973790720 is an apocalyptic number.

1973790720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1973790720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3921372000).

1973790720 is an abundant number, since it is smaller than the sum of its proper divisors (5868953280).

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

1973790720 is a wasteful number, since it uses less digits than its factorization.

1973790720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 1973790720 is about 44427.3645403371. The cubic root of 1973790720 is about 1254.3932284793.

The spelling of 1973790720 in words is "one billion, nine hundred seventy-three million, seven hundred ninety thousand, seven hundred twenty".