1989740375 has 16 divisors (see below), whose sum is σ = 2837939520. Its totient is φ = 1364392800.

The previous prime is 1989740353. The next prime is 1989740387. The reversal of 1989740375 is 5730479891.

It is not a de Polignac number, because 1989740375 - 2²⁸ = 1721304919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136120 + ... + 1137869.

It is an arithmetic number, because the mean of its divisors is an integer number (177371220).

Almost surely, 2^1989740375 is an apocalyptic number.

1989740375 is a deficient number, since it is larger than the sum of its proper divisors (848199145).

1989740375 is an equidigital number, since it uses as much as digits as its factorization.

1989740375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274011 (or 2274001 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1989740375 is about 44606.5059716629. The cubic root of 1989740375 is about 1257.7629692441.

The spelling of 1989740375 in words is "one billion, nine hundred eighty-nine million, seven hundred forty thousand, three hundred seventy-five".