148998623 has 4 divisors (see below), whose sum is σ = 155476848. Its totient is φ = 142520400.

The previous prime is 148998611. The next prime is 148998631. The reversal of 148998623 is 326899841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326899841 = 12161 ⋅26881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148998623 is a prime.

It is a super-2 number, since 2×148998623² = 44401179311792258, which contains 22 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 (148998643) 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, 3239078 + ... + 3239123.

It is an arithmetic number, because the mean of its divisors is an integer number (38869212).

Almost surely, 2^148998623 is an apocalyptic number.

148998623 is a deficient number, since it is larger than the sum of its proper divisors (6478225).

148998623 is an equidigital number, since it uses as much as digits as its factorization.

148998623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478224.

The product of its digits is 746496, while the sum is 50.

The square root of 148998623 is about 12206.4992114857. The cubic root of 148998623 is about 530.1442860990.

The spelling of 148998623 in words is "one hundred forty-eight million, nine hundred ninety-eight thousand, six hundred twenty-three".