3978148294 has 16 divisors (see below), whose sum is σ = 6304481280. Its totient is φ = 1877427720.

The previous prime is 3978148289. The next prime is 3978148309. The reversal of 3978148294 is 4928418793.

It is a super-2 number, since 2×3978148294² = 31651327698110220872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182854 + ... + 203449.

It is an arithmetic number, because the mean of its divisors is an integer number (394030080).

Almost surely, 2^3978148294 is an apocalyptic number.

3978148294 is a deficient number, since it is larger than the sum of its proper divisors (2326332986).

3978148294 is a wasteful number, since it uses less digits than its factorization.

3978148294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386595.

The product of its digits is 3483648, while the sum is 55.

The square root of 3978148294 is about 63072.5637183078. The cubic root of 3978148294 is about 1584.5051537649.

The spelling of 3978148294 in words is "three billion, nine hundred seventy-eight million, one hundred forty-eight thousand, two hundred ninety-four".