187038890973 has 12 divisors (see below), whose sum is σ = 294727949568. Its totient is φ = 113356903560.

The previous prime is 187038890921. The next prime is 187038890977. The reversal of 187038890973 is 379098830781.

187038890973 is a `hidden beast` number, since 1 + 87 + 0 + 388 + 90 + 97 + 3 = 666.

It is not a de Polignac number, because 187038890973 - 2¹³ = 187038882781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187038890973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187038890977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 944640765 + ... + 944640962.

It is an arithmetic number, because the mean of its divisors is an integer number (24560662464).

Almost surely, 2^187038890973 is an apocalyptic number.

It is an amenable number.

187038890973 is a deficient number, since it is larger than the sum of its proper divisors (107689058595).

187038890973 is a wasteful number, since it uses less digits than its factorization.

187038890973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889281744 (or 1889281741 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 187038890973 in words is "one hundred eighty-seven billion, thirty-eight million, eight hundred ninety thousand, nine hundred seventy-three".