148637791 has 2 divisors, whose sum is σ = 148637792. Its totient is φ = 148637790.

The previous prime is 148637737. The next prime is 148637807. The reversal of 148637791 is 197736841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148637791 - 2¹⁷ = 148506719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148637711) 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, 74318895 + 74318896.

It is an arithmetic number, because the mean of its divisors is an integer number (74318896).

Almost surely, 2^148637791 is an apocalyptic number.

148637791 is a deficient number, since it is larger than the sum of its proper divisors (1).

148637791 is an equidigital number, since it uses as much as digits as its factorization.

148637791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 148637791 is about 12191.7099292921. The cubic root of 148637791 is about 529.7159876216.

The spelling of 148637791 in words is "one hundred forty-eight million, six hundred thirty-seven thousand, seven hundred ninety-one".