148909583 has 4 divisors (see below), whose sum is σ = 152077920. Its totient is φ = 145741248.

The previous prime is 148909543. The next prime is 148909591. The reversal of 148909583 is 385909841.

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

It is a cyclic number.

It is not a de Polignac number, because 148909583 - 2¹² = 148905487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 3168289 = 148909583 / (1 + 4 + 8 + 9 + 0 + 9 + 5 + 8 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148909543) 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, 1584098 + ... + 1584191.

It is an arithmetic number, because the mean of its divisors is an integer number (38019480).

Almost surely, 2^148909583 is an apocalyptic number.

148909583 is a deficient number, since it is larger than the sum of its proper divisors (3168337).

148909583 is an equidigital number, since it uses as much as digits as its factorization.

148909583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168336.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 148909583 is about 12202.8514290718. The cubic root of 148909583 is about 530.0386621850.

The spelling of 148909583 in words is "one hundred forty-eight million, nine hundred nine thousand, five hundred eighty-three".