148661478 has 24 divisors (see below), whose sum is σ = 368114448. Its totient is φ = 42474672.

The previous prime is 148661477. The next prime is 148661479. The reversal of 148661478 is 874166841.

148661478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (148661477) and next prime (148661479).

It is a super-2 number, since 2×148661478² = 44200470082288968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148661477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589801 + ... + 590052.

It is an arithmetic number, because the mean of its divisors is an integer number (15338102).

Almost surely, 2^148661478 is an apocalyptic number.

148661478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

148661478 is an abundant number, since it is smaller than the sum of its proper divisors (219452970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148661478 is a wasteful number, since it uses less digits than its factorization.

148661478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179868 (or 1179865 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 148661478 is about 12192.6813293877. The cubic root of 148661478 is about 529.7441247372.

The spelling of 148661478 in words is "one hundred forty-eight million, six hundred sixty-one thousand, four hundred seventy-eight".