148136986 has 4 divisors (see below), whose sum is σ = 222205482. Its totient is φ = 74068492.

The previous prime is 148136971. The next prime is 148136987. The reversal of 148136986 is 689631841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126225225 + 21911761 = 11235^2 + 4681^2 .

It is not an unprimeable number, because it can be changed into a prime (148136987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37034245 + ... + 37034248.

Almost surely, 2^148136986 is an apocalyptic number.

148136986 is a deficient number, since it is larger than the sum of its proper divisors (74068496).

148136986 is an equidigital number, since it uses as much as digits as its factorization.

148136986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74068495.

The product of its digits is 248832, while the sum is 46.

The square root of 148136986 is about 12171.1538483416. The cubic root of 148136986 is about 529.1203945513.

The spelling of 148136986 in words is "one hundred forty-eight million, one hundred thirty-six thousand, nine hundred eighty-six".