148615919 has 4 divisors (see below), whose sum is σ = 150058896. Its totient is φ = 147172944.

The previous prime is 148615913. The next prime is 148615991. The reversal of 148615919 is 919516841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148615919 is a prime.

It is a super-2 number, since 2×148615919² = 44173382760429122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148615919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148615913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721334 + ... + 721539.

It is an arithmetic number, because the mean of its divisors is an integer number (37514724).

Almost surely, 2^148615919 is an apocalyptic number.

148615919 is a deficient number, since it is larger than the sum of its proper divisors (1442977).

148615919 is a wasteful number, since it uses less digits than its factorization.

148615919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442976.

The product of its digits is 77760, while the sum is 44.

The square root of 148615919 is about 12190.8128933226. The cubic root of 148615919 is about 529.6900038383.

The spelling of 148615919 in words is "one hundred forty-eight million, six hundred fifteen thousand, nine hundred nineteen".