148685978 has 16 divisors (see below), whose sum is σ = 269884224. Its totient is φ = 59974080.

The previous prime is 148685969. The next prime is 148685989. The reversal of 148685978 is 879586841.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 312128 + ... + 312603.

It is an arithmetic number, because the mean of its divisors is an integer number (16867764).

Almost surely, 2^148685978 is an apocalyptic number.

148685978 is a deficient number, since it is larger than the sum of its proper divisors (121198246).

148685978 is a wasteful number, since it uses less digits than its factorization.

148685978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624757.

The product of its digits is 3870720, while the sum is 56.

The square root of 148685978 is about 12193.6859890683. The cubic root of 148685978 is about 529.7732244482.

The spelling of 148685978 in words is "one hundred forty-eight million, six hundred eighty-five thousand, nine hundred seventy-eight".