148249681 has 8 divisors (see below), whose sum is σ = 152285760. Its totient is φ = 144240432.

The previous prime is 148249667. The next prime is 148249691. The reversal of 148249681 is 186942841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148249681 - 2⁷ = 148249553 is a prime.

It is a super-3 number, since 3×148249681³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148249631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755 + ... + 17863.

It is an arithmetic number, because the mean of its divisors is an integer number (19035720).

Almost surely, 2^148249681 is an apocalyptic number.

It is an amenable number.

148249681 is a deficient number, since it is larger than the sum of its proper divisors (4036079).

148249681 is a wasteful number, since it uses less digits than its factorization.

148249681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13415.

The product of its digits is 110592, while the sum is 43.

The square root of 148249681 is about 12175.7825621190. The cubic root of 148249681 is about 529.2545364019.

The spelling of 148249681 in words is "one hundred forty-eight million, two hundred forty-nine thousand, six hundred eighty-one".