148565749 has 2 divisors, whose sum is σ = 148565750. Its totient is φ = 148565748.

The previous prime is 148565719. The next prime is 148565761. The reversal of 148565749 is 947565841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98863249 + 49702500 = 9943^2 + 7050^2 .

It is an emirp because it is prime and its reverse (947565841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148565749 - 2¹³ = 148557557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148565719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74282874 + 74282875.

It is an arithmetic number, because the mean of its divisors is an integer number (74282875).

Almost surely, 2^148565749 is an apocalyptic number.

It is an amenable number.

148565749 is a deficient number, since it is larger than the sum of its proper divisors (1).

148565749 is an equidigital number, since it uses as much as digits as its factorization.

148565749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 49.

The square root of 148565749 is about 12188.7550225608. The cubic root of 148565749 is about 529.6303925966.

The spelling of 148565749 in words is "one hundred forty-eight million, five hundred sixty-five thousand, seven hundred forty-nine".