2102043393 has 30 divisors (see below), whose sum is σ = 3282617954. Its totient is φ = 1340406144.

The previous prime is 2102043389. The next prime is 2102043407. The reversal of 2102043393 is 3933402012.

It is a happy number.

2102043393 is a `hidden beast` number, since 210 + 20 + 43 + 393 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1999162944 + 102880449 = 44712^2 + 10143^2 .

It is not a de Polignac number, because 2102043393 - 2² = 2102043389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102043313) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 18321 + ... + 67377.

Almost surely, 2^2102043393 is an apocalyptic number.

2102043393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2102043393 is a deficient number, since it is larger than the sum of its proper divisors (1180574561).

2102043393 is an equidigital number, since it uses as much as digits as its factorization.

2102043393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49115 (or 49083 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 2102043393 is about 45848.0467740993. The cubic root of 2102043393 is about 1280.9943837542.

The spelling of 2102043393 in words is "two billion, one hundred two million, forty-three thousand, three hundred ninety-three".