187109162725049 has 2 divisors, whose sum is σ = 187109162725050. Its totient is φ = 187109162725048.

The previous prime is 187109162724983. The next prime is 187109162725139. The reversal of 187109162725049 is 940527261901781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144114454733824 + 42994707991225 = 12004768^2 + 6557035^2 .

It is an emirp because it is prime and its reverse (940527261901781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187109162725049 is a prime.

It is a super-2 number, since 2×187109162725049² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 187109162724982 and 187109162725000.

It is not a weakly prime, because it can be changed into another prime (187109162725249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93554581362524 + 93554581362525.

It is an arithmetic number, because the mean of its divisors is an integer number (93554581362525).

Almost surely, 2^{187109162725049} is an apocalyptic number.

It is an amenable number.

187109162725049 is a deficient number, since it is larger than the sum of its proper divisors (1).

187109162725049 is an equidigital number, since it uses as much as digits as its factorization.

187109162725049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 62.

The spelling of 187109162725049 in words is "one hundred eighty-seven trillion, one hundred nine billion, one hundred sixty-two million, seven hundred twenty-five thousand, forty-nine".