3978514126 has 4 divisors (see below), whose sum is σ = 5967771192. Its totient is φ = 1989257062.

The previous prime is 3978514081. The next prime is 3978514151. The reversal of 3978514126 is 6214158793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6214158793 = 2137 ⋅2907889.

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, 994628530 + ... + 994628533.

It is an arithmetic number, because the mean of its divisors is an integer number (1491942798).

Almost surely, 2^3978514126 is an apocalyptic number.

3978514126 is a deficient number, since it is larger than the sum of its proper divisors (1989257066).

3978514126 is a wasteful number, since it uses less digits than its factorization.

3978514126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989257065.

The product of its digits is 362880, while the sum is 46.

The square root of 3978514126 is about 63075.4637398727. The cubic root of 3978514126 is about 1584.5537228376.

The spelling of 3978514126 in words is "three billion, nine hundred seventy-eight million, five hundred fourteen thousand, one hundred twenty-six".