187456469749 has 2 divisors, whose sum is σ = 187456469750. Its totient is φ = 187456469748.

The previous prime is 187456469731. The next prime is 187456469773. The reversal of 187456469749 is 947964654781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159828046225 + 27628423524 = 399785^2 + 166218^2 .

It is a cyclic number.

It is not a de Polignac number, because 187456469749 - 2²³ = 187448081141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187456469729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93728234874 + 93728234875.

It is an arithmetic number, because the mean of its divisors is an integer number (93728234875).

Almost surely, 2^187456469749 is an apocalyptic number.

It is an amenable number.

187456469749 is a deficient number, since it is larger than the sum of its proper divisors (1).

187456469749 is an equidigital number, since it uses as much as digits as its factorization.

187456469749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 70.

The spelling of 187456469749 in words is "one hundred eighty-seven billion, four hundred fifty-six million, four hundred sixty-nine thousand, seven hundred forty-nine".