187249949 has 2 divisors, whose sum is σ = 187249950. Its totient is φ = 187249948.

The previous prime is 187249913. The next prime is 187249957. The reversal of 187249949 is 949942781.

187249949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152522500 + 34727449 = 12350^2 + 5893^2 .

It is a cyclic number.

It is not a de Polignac number, because 187249949 - 2¹² = 187245853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187249949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187242949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93624974 + 93624975.

It is an arithmetic number, because the mean of its divisors is an integer number (93624975).

Almost surely, 2^187249949 is an apocalyptic number.

It is an amenable number.

187249949 is a deficient number, since it is larger than the sum of its proper divisors (1).

187249949 is an equidigital number, since it uses as much as digits as its factorization.

187249949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 187249949 is about 13683.9303199044. The cubic root of 187249949 is about 572.1025752520.

The spelling of 187249949 in words is "one hundred eighty-seven million, two hundred forty-nine thousand, nine hundred forty-nine".