148418391 has 16 divisors (see below), whose sum is σ = 219957120. Its totient is φ = 88252320.

The previous prime is 148418377. The next prime is 148418407. The reversal of 148418391 is 193814841.

It is not a de Polignac number, because 148418391 - 2⁹ = 148417879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148418791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40681 + ... + 44178.

It is an arithmetic number, because the mean of its divisors is an integer number (13747320).

Almost surely, 2^148418391 is an apocalyptic number.

148418391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148418391 is a deficient number, since it is larger than the sum of its proper divisors (71538729).

148418391 is a wasteful number, since it uses less digits than its factorization.

148418391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84926.

The product of its digits is 27648, while the sum is 39.

The square root of 148418391 is about 12182.7086889575. The cubic root of 148418391 is about 529.4552263964.

It can be divided in two parts, 14841 and 8391, that added together give a palindrome (23232).

The spelling of 148418391 in words is "one hundred forty-eight million, four hundred eighteen thousand, three hundred ninety-one".