187454749 has 2 divisors, whose sum is σ = 187454750. Its totient is φ = 187454748.

The previous prime is 187454723. The next prime is 187454783. The reversal of 187454749 is 947454781.

187454749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118265625 + 69189124 = 10875^2 + 8318^2 .

It is a cyclic number.

It is not a de Polignac number, because 187454749 - 2⁵ = 187454717 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187454789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93727374 + 93727375.

It is an arithmetic number, because the mean of its divisors is an integer number (93727375).

Almost surely, 2^187454749 is an apocalyptic number.

It is an amenable number.

187454749 is a deficient number, since it is larger than the sum of its proper divisors (1).

187454749 is an equidigital number, since it uses as much as digits as its factorization.

187454749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 187454749 is about 13691.4115050275. The cubic root of 187454749 is about 572.3110736039.

The spelling of 187454749 in words is "one hundred eighty-seven million, four hundred fifty-four thousand, seven hundred forty-nine".