148444474 has 4 divisors (see below), whose sum is σ = 222666714. Its totient is φ = 74222236.

The previous prime is 148444451. The next prime is 148444487. The reversal of 148444474 is 474444841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474444841 = 13 ⋅36495757.

It can be written as a sum of positive squares in only one way, i.e., 137053849 + 11390625 = 11707^2 + 3375^2 .

It is a super-2 number, since 2×148444474² = 44071523722273352, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 37111117 + ... + 37111120.

Almost surely, 2^148444474 is an apocalyptic number.

148444474 is a deficient number, since it is larger than the sum of its proper divisors (74222240).

148444474 is an equidigital number, since it uses as much as digits as its factorization.

148444474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74222239.

The product of its digits is 229376, while the sum is 40.

The square root of 148444474 is about 12183.7791345707. The cubic root of 148444474 is about 529.4862400097.

The spelling of 148444474 in words is "one hundred forty-eight million, four hundred forty-four thousand, four hundred seventy-four".