1973890026 has 32 divisors (see below), whose sum is σ = 4644449280. Its totient is φ = 619259328.

The previous prime is 1973889991. The next prime is 1973890057. The reversal of 1973890026 is 6200983791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074186 + ... + 1076021.

It is an arithmetic number, because the mean of its divisors is an integer number (145139040).

Almost surely, 2^1973890026 is an apocalyptic number.

1973890026 is an abundant number, since it is smaller than the sum of its proper divisors (2670559254).

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

1973890026 is a wasteful number, since it uses less digits than its factorization.

1973890026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150235 (or 2150229 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1973890026 is about 44428.4821482796. The cubic root of 1973890026 is about 1254.4142652731.

The spelling of 1973890026 in words is "one billion, nine hundred seventy-three million, eight hundred ninety thousand, twenty-six".