1683945137 has 8 divisors (see below), whose sum is σ = 1957128000. Its totient is φ = 1418917104.

The previous prime is 1683945113. The next prime is 1683945139. The reversal of 1683945137 is 7315493861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1683945137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1683945091 and 1683945100.

It is not an unprimeable number, because it can be changed into a prime (1683945139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038262 + ... + 2039087.

It is an arithmetic number, because the mean of its divisors is an integer number (244641000).

Almost surely, 2^1683945137 is an apocalyptic number.

It is an amenable number.

1683945137 is a deficient number, since it is larger than the sum of its proper divisors (273182863).

1683945137 is an equidigital number, since it uses as much as digits as its factorization.

1683945137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077415.

The product of its digits is 544320, while the sum is 47.

The square root of 1683945137 is about 41035.9005871688. The cubic root of 1683945137 is about 1189.7142022514.

The spelling of 1683945137 in words is "one billion, six hundred eighty-three million, nine hundred forty-five thousand, one hundred thirty-seven".