3978513148 has 6 divisors (see below), whose sum is σ = 6962398016. Its totient is φ = 1989256572.

The previous prime is 3978513107. The next prime is 3978513157. The reversal of 3978513148 is 8413158793.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497314140 + ... + 497314147.

Almost surely, 2^3978513148 is an apocalyptic number.

It is an amenable number.

3978513148 is a deficient number, since it is larger than the sum of its proper divisors (2983884868).

3978513148 is a wasteful number, since it uses less digits than its factorization.

3978513148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994628291 (or 994628289 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 3978513148 is about 63075.4559872539. The cubic root of 3978513148 is about 1584.5535929991.

The spelling of 3978513148 in words is "three billion, nine hundred seventy-eight million, five hundred thirteen thousand, one hundred forty-eight".