3948695378 has 8 divisors (see below), whose sum is σ = 5966277372. Its totient is φ = 1959936256.

The previous prime is 3948695357. The next prime is 3948695393. The reversal of 3948695378 is 8735968493.

It can be written as a sum of positive squares in 2 ways, for example, as 3274929529 + 673765849 = 57227^2 + 25957^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3948695378.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7205375 + ... + 7205922.

Almost surely, 2^3948695378 is an apocalyptic number.

3948695378 is a deficient number, since it is larger than the sum of its proper divisors (2017581994).

3948695378 is a wasteful number, since it uses less digits than its factorization.

3948695378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411436.

The product of its digits is 39191040, while the sum is 62.

The square root of 3948695378 is about 62838.6455773833. The cubic root of 3948695378 is about 1580.5850765407.

The spelling of 3948695378 in words is "three billion, nine hundred forty-eight million, six hundred ninety-five thousand, three hundred seventy-eight".