1980375530 has 16 divisors (see below), whose sum is σ = 4073915520. Its totient is φ = 678985872.

The previous prime is 1980375521. The next prime is 1980375557. The reversal of 1980375530 is 355730891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14145470 + ... + 14145609.

It is an arithmetic number, because the mean of its divisors is an integer number (254619720).

Almost surely, 2^1980375530 is an apocalyptic number.

1980375530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980375530 is an abundant number, since it is smaller than the sum of its proper divisors (2093539990).

1980375530 is a wasteful number, since it uses less digits than its factorization.

1980375530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28291093.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 1980375530 is about 44501.4104270865. The cubic root of 1980375530 is about 1255.7866171135.

The spelling of 1980375530 in words is "one billion, nine hundred eighty million, three hundred seventy-five thousand, five hundred thirty".