148378978 has 8 divisors (see below), whose sum is σ = 242802000. Its totient is φ = 67444980.

The previous prime is 148378969. The next prime is 148378981. The reversal of 148378978 is 879873841.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×148378978² = 44032642224648968, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3372228 + ... + 3372271.

It is an arithmetic number, because the mean of its divisors is an integer number (30350250).

Almost surely, 2^148378978 is an apocalyptic number.

148378978 is a deficient number, since it is larger than the sum of its proper divisors (94423022).

148378978 is a wasteful number, since it uses less digits than its factorization.

148378978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744512.

The product of its digits is 2709504, while the sum is 55.

The square root of 148378978 is about 12181.0910020408. The cubic root of 148378978 is about 529.4083560453.

The spelling of 148378978 in words is "one hundred forty-eight million, three hundred seventy-eight thousand, nine hundred seventy-eight".