148739985 has 48 divisors (see below), whose sum is σ = 268304400. Its totient is φ = 76134912.

The previous prime is 148739957. The next prime is 148739993. The reversal of 148739985 is 589937841.

It can be written as a sum of positive squares in 8 ways, for example, as 898704 + 147841281 = 948^2 + 12159^2 .

It is not a de Polignac number, because 148739985 - 2¹¹ = 148737937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382171 + ... + 382559.

It is an arithmetic number, because the mean of its divisors is an integer number (5589675).

Almost surely, 2^148739985 is an apocalyptic number.

148739985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

148739985 is a deficient number, since it is larger than the sum of its proper divisors (119564415).

148739985 is a wasteful number, since it uses less digits than its factorization.

148739985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 719 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 148739985 is about 12195.9003357686. The cubic root of 148739985 is about 529.8373596129.

The spelling of 148739985 in words is "one hundred forty-eight million, seven hundred thirty-nine thousand, nine hundred eighty-five".