1984845393 has 24 divisors (see below), whose sum is σ = 3030478880. Its totient is φ = 1248359040.

The previous prime is 1984845377. The next prime is 1984845407. The reversal of 1984845393 is 3935484891.

It is not a de Polignac number, because 1984845393 - 2⁴ = 1984845377 is a prime.

It is a super-2 number, since 2×1984845393² = 7879222468226648898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1984845323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17130 + ... + 65292.

Almost surely, 2^1984845393 is an apocalyptic number.

It is an amenable number.

1984845393 is a deficient number, since it is larger than the sum of its proper divisors (1045633487).

1984845393 is a wasteful number, since it uses less digits than its factorization.

1984845393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48429 (or 48426 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1984845393 is about 44551.6037085086. The cubic root of 1984845393 is about 1256.7307101568.

The spelling of 1984845393 in words is "one billion, nine hundred eighty-four million, eight hundred forty-five thousand, three hundred ninety-three".