1683357057 has 6 divisors (see below), whose sum is σ = 2431515762. Its totient is φ = 1122238032.

The previous prime is 1683357019. The next prime is 1683357089. The reversal of 1683357057 is 7507533861.

It can be written as a sum of positive squares in only one way, i.e., 1013530896 + 669826161 = 31836^2 + 25881^2 .

It is not a de Polignac number, because 1683357057 - 2⁶ = 1683356993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1683357007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93519828 + ... + 93519845.

It is an arithmetic number, because the mean of its divisors is an integer number (405252627).

Almost surely, 2^1683357057 is an apocalyptic number.

It is an amenable number.

1683357057 is a deficient number, since it is larger than the sum of its proper divisors (748158705).

1683357057 is a wasteful number, since it uses less digits than its factorization.

1683357057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187039679 (or 187039676 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 1683357057 is about 41028.7345283766. The cubic root of 1683357057 is about 1189.5756924758.

The spelling of 1683357057 in words is "one billion, six hundred eighty-three million, three hundred fifty-seven thousand, fifty-seven".