148368681 has 12 divisors (see below), whose sum is σ = 214667908. Its totient is φ = 98747424.

The previous prime is 148368667. The next prime is 148368691. The reversal of 148368681 is 186863841.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62157456 + 86211225 = 7884^2 + 9285^2 .

It is not a de Polignac number, because 148368681 - 2²¹ = 146271529 is a prime.

It is a super-2 number, since 2×148368681² = 44026531003359522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148368601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7930 + ... + 18963.

Almost surely, 2^148368681 is an apocalyptic number.

It is an amenable number.

148368681 is a deficient number, since it is larger than the sum of its proper divisors (66299227).

148368681 is a wasteful number, since it uses less digits than its factorization.

148368681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27512 (or 27509 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 148368681 is about 12180.6683314176. The cubic root of 148368681 is about 529.3961093780.

The spelling of 148368681 in words is "one hundred forty-eight million, three hundred sixty-eight thousand, six hundred eighty-one".