148974569 has 4 divisors (see below), whose sum is σ = 149339220. Its totient is φ = 148609920.

The previous prime is 148974563. The next prime is 148974571. The reversal of 148974569 is 965479841.

148974569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 965479841 = 31 ⋅31144511.

It can be written as a sum of positive squares in 2 ways, for example, as 135373225 + 13601344 = 11635^2 + 3688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148974569 is a prime.

It is a super-2 number, since 2×148974569² = 44386844417471522, 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 148974569.

It is not an unprimeable number, because it can be changed into a prime (148974563) 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, 181712 + ... + 182529.

It is an arithmetic number, because the mean of its divisors is an integer number (37334805).

Almost surely, 2^148974569 is an apocalyptic number.

It is an amenable number.

148974569 is a deficient number, since it is larger than the sum of its proper divisors (364651).

148974569 is an equidigital number, since it uses as much as digits as its factorization.

148974569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364650.

The product of its digits is 2177280, while the sum is 53.

The square root of 148974569 is about 12205.5138769328. The cubic root of 148974569 is about 530.1157561330.

The spelling of 148974569 in words is "one hundred forty-eight million, nine hundred seventy-four thousand, five hundred sixty-nine".