3918245397 has 16 divisors (see below), whose sum is σ = 5771412480. Its totient is φ = 2344633200.

The previous prime is 3918245371. The next prime is 3918245407. The reversal of 3918245397 is 7935428193.

It is not a de Polignac number, because 3918245397 - 2⁶ = 3918245333 is a prime.

It is a super-2 number, since 2×3918245397² = 30705293982223375218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918245327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748879 + ... + 754092.

It is an arithmetic number, because the mean of its divisors is an integer number (360713280).

Almost surely, 2^3918245397 is an apocalyptic number.

It is an amenable number.

3918245397 is a deficient number, since it is larger than the sum of its proper divisors (1853167083).

3918245397 is a wasteful number, since it uses less digits than its factorization.

3918245397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503064.

The product of its digits is 1632960, while the sum is 51.

The square root of 3918245397 is about 62595.8896174501. The cubic root of 3918245397 is about 1576.5117453804.

The spelling of 3918245397 in words is "three billion, nine hundred eighteen million, two hundred forty-five thousand, three hundred ninety-seven".