148391893 has 8 divisors (see below), whose sum is σ = 159946136. Its totient is φ = 136857600.

The previous prime is 148391857. The next prime is 148391897. The reversal of 148391893 is 398193841.

It is a happy number.

148391893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3020644 + 145371249 = 1738^2 + 12057^2 .

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 148391893 - 2²⁵ = 114837461 is a prime.

It is a super-3 number, since 3×148391893³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148391897) 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, 12853 + ... + 21493.

It is an arithmetic number, because the mean of its divisors is an integer number (19993267).

Almost surely, 2^148391893 is an apocalyptic number.

148391893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

148391893 is a deficient number, since it is larger than the sum of its proper divisors (11554243).

148391893 is a wasteful number, since it uses less digits than its factorization.

148391893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9975.

The product of its digits is 186624, while the sum is 46.

The square root of 148391893 is about 12181.6211154345. The cubic root of 148391893 is about 529.4237156123.

The spelling of 148391893 in words is "one hundred forty-eight million, three hundred ninety-one thousand, eight hundred ninety-three".