3918247371 has 8 divisors (see below), whose sum is σ = 5804810960. Its totient is φ = 2612164896.

The previous prime is 3918247367. The next prime is 3918247373. The reversal of 3918247371 is 1737428193.

3918247371 is a `hidden beast` number, since 39 + 1 + 8 + 247 + 371 = 666.

It is not a de Polignac number, because 3918247371 - 2² = 3918247367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3918247373) by changing a digit.

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, 72560110 + ... + 72560163.

It is an arithmetic number, because the mean of its divisors is an integer number (725601370).

Almost surely, 2^3918247371 is an apocalyptic number.

3918247371 is a deficient number, since it is larger than the sum of its proper divisors (1886563589).

3918247371 is a wasteful number, since it uses less digits than its factorization.

3918247371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145120282 (or 145120276 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 3918247371 is about 62595.9053852566. The cubic root of 3918247371 is about 1576.5120101276.

The spelling of 3918247371 in words is "three billion, nine hundred eighteen million, two hundred forty-seven thousand, three hundred seventy-one".