3894018923 has 2 divisors, whose sum is σ = 3894018924. Its totient is φ = 3894018922.

The previous prime is 3894018907. The next prime is 3894018959. The reversal of 3894018923 is 3298104983.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3894018923 - 2⁴ = 3894018907 is a prime.

It is not a weakly prime, because it can be changed into another prime (3894018223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1947009461 + 1947009462.

It is an arithmetic number, because the mean of its divisors is an integer number (1947009462).

Almost surely, 2^3894018923 is an apocalyptic number.

3894018923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3894018923 is an equidigital number, since it uses as much as digits as its factorization.

3894018923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 3894018923 is about 62402.0746690364. The cubic root of 3894018923 is about 1573.2558400150.

The spelling of 3894018923 in words is "three billion, eight hundred ninety-four million, eighteen thousand, nine hundred twenty-three".