148857681 has 8 divisors (see below), whose sum is σ = 226830784. Its totient is φ = 85061520.

The previous prime is 148857659. The next prime is 148857689. The reversal of 148857681 is 186758841.

It is a happy number.

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

It is not a de Polignac number, because 148857681 - 2⁶ = 148857617 is a prime.

It is a super-2 number, since 2×148857681² = 44317218385395522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148857681.

It is not an unprimeable number, because it can be changed into a prime (148857689) 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, 3544210 + ... + 3544251.

It is an arithmetic number, because the mean of its divisors is an integer number (28353848).

Almost surely, 2^148857681 is an apocalyptic number.

It is an amenable number.

148857681 is a deficient number, since it is larger than the sum of its proper divisors (77973103).

148857681 is an equidigital number, since it uses as much as digits as its factorization.

148857681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7088471.

The product of its digits is 430080, while the sum is 48.

The square root of 148857681 is about 12200.7246096287. The cubic root of 148857681 is about 529.9770738867.

The spelling of 148857681 in words is "one hundred forty-eight million, eight hundred fifty-seven thousand, six hundred eighty-one".