148155478 has 4 divisors (see below), whose sum is σ = 222233220. Its totient is φ = 74077738.

The previous prime is 148155463. The next prime is 148155503. The reversal of 148155478 is 874551841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874551841 = 647 ⋅1351703.

It is a super-2 number, since 2×148155478² = 43900091322816968, which contains 22 as substring.

It is a congruent number.

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, 37038868 + ... + 37038871.

It is an arithmetic number, because the mean of its divisors is an integer number (55558305).

Almost surely, 2^148155478 is an apocalyptic number.

148155478 is a deficient number, since it is larger than the sum of its proper divisors (74077742).

148155478 is an equidigital number, since it uses as much as digits as its factorization.

148155478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74077741.

The product of its digits is 179200, while the sum is 43.

The square root of 148155478 is about 12171.9134896696. The cubic root of 148155478 is about 529.1424104064.

The spelling of 148155478 in words is "one hundred forty-eight million, one hundred fifty-five thousand, four hundred seventy-eight".