20148843393 has 28 divisors (see below), whose sum is σ = 34525089408. Its totient is φ = 11513621880.

The previous prime is 20148843371. The next prime is 20148843397. The reversal of 20148843393 is 39334884102.

20148843393 is a `hidden beast` number, since 201 + 4 + 8 + 8 + 433 + 9 + 3 = 666.

It is not a de Polignac number, because 20148843393 - 2⁵ = 20148843361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20148843397) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1969113 + ... + 1979318.

Almost surely, 2^20148843393 is an apocalyptic number.

It is an amenable number.

20148843393 is a deficient number, since it is larger than the sum of its proper divisors (14376246015).

20148843393 is an frugal number, since it uses more digits than its factorization.

20148843393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948456 (or 3948441 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 20148843393 in words is "twenty billion, one hundred forty-eight million, eight hundred forty-three thousand, three hundred ninety-three".