148103981 has 2 divisors, whose sum is σ = 148103982. Its totient is φ = 148103980.

The previous prime is 148103927. The next prime is 148103999. The reversal of 148103981 is 189301841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141395881 + 6708100 = 11891^2 + 2590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148103981 is a prime.

It is a super-2 number, since 2×148103981² = 43869578376096722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148103381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74051990 + 74051991.

It is an arithmetic number, because the mean of its divisors is an integer number (74051991).

Almost surely, 2^148103981 is an apocalyptic number.

It is an amenable number.

148103981 is a deficient number, since it is larger than the sum of its proper divisors (1).

148103981 is an equidigital number, since it uses as much as digits as its factorization.

148103981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 148103981 is about 12169.7979030056. The cubic root of 148103981 is about 529.0810955299.

The spelling of 148103981 in words is "one hundred forty-eight million, one hundred three thousand, nine hundred eighty-one".