148903481 has 2 divisors, whose sum is σ = 148903482. Its totient is φ = 148903480.

The previous prime is 148903427. The next prime is 148903523. The reversal of 148903481 is 184309841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141395881 + 7507600 = 11891^2 + 2740^2 .

It is an emirp because it is prime and its reverse (184309841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148903481 - 2²² = 144709177 is a prime.

It is a super-2 number, since 2×148903481² = 44344493307834722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148903421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74451740 + 74451741.

It is an arithmetic number, because the mean of its divisors is an integer number (74451741).

Almost surely, 2^148903481 is an apocalyptic number.

It is an amenable number.

148903481 is a deficient number, since it is larger than the sum of its proper divisors (1).

148903481 is an equidigital number, since it uses as much as digits as its factorization.

148903481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 148903481 is about 12202.6014029796. The cubic root of 148903481 is about 530.0314221313.

The spelling of 148903481 in words is "one hundred forty-eight million, nine hundred three thousand, four hundred eighty-one".