148195669 has 4 divisors (see below), whose sum is σ = 150707520. Its totient is φ = 145683820.

The previous prime is 148195643. The next prime is 148195699. The reversal of 148195669 is 966591841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148195669 - 2²¹ = 146098517 is a prime.

It is a super-2 number, since 2×148195669² = 43923912620715122, 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 (148195699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255837 + ... + 1255954.

It is an arithmetic number, because the mean of its divisors is an integer number (37676880).

Almost surely, 2^148195669 is an apocalyptic number.

It is an amenable number.

148195669 is a deficient number, since it is larger than the sum of its proper divisors (2511851).

148195669 is an equidigital number, since it uses as much as digits as its factorization.

148195669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511850.

The product of its digits is 466560, while the sum is 49.

The square root of 148195669 is about 12173.5643506740. The cubic root of 148195669 is about 529.1902539289.

The spelling of 148195669 in words is "one hundred forty-eight million, one hundred ninety-five thousand, six hundred sixty-nine".