188894259949 has 2 divisors, whose sum is σ = 188894259950. Its totient is φ = 188894259948.

The previous prime is 188894259937. The next prime is 188894259979. The reversal of 188894259949 is 949952498881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173487244324 + 15407015625 = 416518^2 + 124125^2 .

It is a cyclic number.

It is not a de Polignac number, because 188894259949 - 2¹³ = 188894251757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188894259919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94447129974 + 94447129975.

It is an arithmetic number, because the mean of its divisors is an integer number (94447129975).

Almost surely, 2^188894259949 is an apocalyptic number.

It is an amenable number.

188894259949 is a deficient number, since it is larger than the sum of its proper divisors (1).

188894259949 is an equidigital number, since it uses as much as digits as its factorization.

188894259949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537477120, while the sum is 76.

The spelling of 188894259949 in words is "one hundred eighty-eight billion, eight hundred ninety-four million, two hundred fifty-nine thousand, nine hundred forty-nine".