148721881 has 8 divisors (see below), whose sum is σ = 185419584. Its totient is φ = 115887120.

The previous prime is 148721851. The next prime is 148721917. The reversal of 148721881 is 188127841.

148721881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 148721881 - 2⁷ = 148721753 is a prime.

It is a super-2 number, since 2×148721881² = 44236395776356322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (148721851) 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, 965650 + ... + 965803.

It is an arithmetic number, because the mean of its divisors is an integer number (23177448).

Almost surely, 2^148721881 is an apocalyptic number.

148721881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

148721881 is a deficient number, since it is larger than the sum of its proper divisors (36697703).

148721881 is a wasteful number, since it uses less digits than its factorization.

148721881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931471.

The product of its digits is 28672, while the sum is 40.

The square root of 148721881 is about 12195.1580965562. The cubic root of 148721881 is about 529.8158622221.

The spelling of 148721881 in words is "one hundred forty-eight million, seven hundred twenty-one thousand, eight hundred eighty-one".