148888881 has 8 divisors (see below), whose sum is σ = 220576160. Its totient is φ = 99259236.

The previous prime is 148888879. The next prime is 148888897. The reversal of 148888881 is 188888841.

148888881 is a `hidden beast` number, since 1 + 488 + 8 + 88 + 81 = 666.

It is not a de Polignac number, because 148888881 - 2¹ = 148888879 is a prime.

It is a super-2 number, since 2×148888881² = 44335797770864322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148888841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2757175 + ... + 2757228.

It is an arithmetic number, because the mean of its divisors is an integer number (27572020).

Almost surely, 2^148888881 is an apocalyptic number.

It is an amenable number.

148888881 is a deficient number, since it is larger than the sum of its proper divisors (71687279).

148888881 is an equidigital number, since it uses as much as digits as its factorization.

148888881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514412 (or 5514406 counting only the distinct ones).

The product of its digits is 1048576, while the sum is 54.

The square root of 148888881 is about 12202.0031552200. The cubic root of 148888881 is about 530.0140983552.

It can be divided in two parts, 148888 and 881, that added together give a square (149769 = 387²).

The spelling of 148888881 in words is "one hundred forty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-one".