148518391 has 8 divisors (see below), whose sum is σ = 169858944. Its totient is φ = 127208760.

The previous prime is 148518373. The next prime is 148518401. The reversal of 148518391 is 193815841.

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 148518391 - 2⁷ = 148518263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148518691) 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, 3696 + ... + 17626.

It is an arithmetic number, because the mean of its divisors is an integer number (21232368).

Almost surely, 2^148518391 is an apocalyptic number.

148518391 is a deficient number, since it is larger than the sum of its proper divisors (21340553).

148518391 is a wasteful number, since it uses less digits than its factorization.

148518391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15461.

The product of its digits is 34560, while the sum is 40.

The square root of 148518391 is about 12186.8121754625. The cubic root of 148518391 is about 529.5741102168.

The spelling of 148518391 in words is "one hundred forty-eight million, five hundred eighteen thousand, three hundred ninety-one".