1980792500 has 30 divisors (see below), whose sum is σ = 4331602506. Its totient is φ = 792316000.

The previous prime is 1980792491. The next prime is 1980792509. The reversal of 1980792500 is 52970891.

It is an interprime number because it is at equal distance from previous prime (1980792491) and next prime (1980792509).

It can be written as a sum of positive squares in 5 ways, for example, as 576192016 + 1404600484 = 24004^2 + 37478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980792509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 393659 + ... + 398658.

Almost surely, 2^1980792500 is an apocalyptic number.

1980792500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980792500 is an abundant number, since it is smaller than the sum of its proper divisors (2350810006).

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

1980792500 is an equidigital number, since it uses as much as digits as its factorization.

1980792500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792341 (or 792324 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 1980792500 is about 44506.0950882011. The cubic root of 1980792500 is about 1255.8747466277.

The spelling of 1980792500 in words is "one billion, nine hundred eighty million, seven hundred ninety-two thousand, five hundred".