158748749 has 2 divisors, whose sum is σ = 158748750. Its totient is φ = 158748748.

The previous prime is 158748721. The next prime is 158748769. The reversal of 158748749 is 947847851.

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., 147792649 + 10956100 = 12157^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 158748749 - 2⁸ = 158748493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158748749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158748719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79374374 + 79374375.

It is an arithmetic number, because the mean of its divisors is an integer number (79374375).

Almost surely, 2^158748749 is an apocalyptic number.

It is an amenable number.

158748749 is a deficient number, since it is larger than the sum of its proper divisors (1).

158748749 is an equidigital number, since it uses as much as digits as its factorization.

158748749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 53.

The square root of 158748749 is about 12599.5535238357. The cubic root of 158748749 is about 541.4646441045.

The spelling of 158748749 in words is "one hundred fifty-eight million, seven hundred forty-eight thousand, seven hundred forty-nine".