148689457 has 16 divisors (see below), whose sum is σ = 179165952. Its totient is φ = 120637440.

The previous prime is 148689451. The next prime is 148689469. The reversal of 148689457 is 754986841.

It is not a de Polignac number, because 148689457 - 2³ = 148689449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148689451) 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 15 ways as a sum of consecutive naturals, for example, 10857 + ... + 20377.

It is an arithmetic number, because the mean of its divisors is an integer number (11197872).

Almost surely, 2^148689457 is an apocalyptic number.

It is an amenable number.

148689457 is a deficient number, since it is larger than the sum of its proper divisors (30476495).

148689457 is an equidigital number, since it uses as much as digits as its factorization.

148689457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648.

The product of its digits is 1935360, while the sum is 52.

The square root of 148689457 is about 12193.8286440314. The cubic root of 148689457 is about 529.7773563480. Note that the first 3 decimals are identical.

The spelling of 148689457 in words is "one hundred forty-eight million, six hundred eighty-nine thousand, four hundred fifty-seven".