188267770949 has 2 divisors, whose sum is σ = 188267770950. Its totient is φ = 188267770948.

The previous prime is 188267770849. The next prime is 188267770991. The reversal of 188267770949 is 949077762881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160065606724 + 28202164225 = 400082^2 + 167935^2 .

It is a cyclic number.

It is not a de Polignac number, because 188267770949 - 2¹⁶ = 188267705413 is a prime.

It is a super-3 number, since 3×188267770949³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188267770849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94133885474 + 94133885475.

It is an arithmetic number, because the mean of its divisors is an integer number (94133885475).

Almost surely, 2^188267770949 is an apocalyptic number.

It is an amenable number.

188267770949 is a deficient number, since it is larger than the sum of its proper divisors (1).

188267770949 is an equidigital number, since it uses as much as digits as its factorization.

188267770949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 188267770949 in words is "one hundred eighty-eight billion, two hundred sixty-seven million, seven hundred seventy thousand, nine hundred forty-nine".