1683738738 has 48 divisors (see below), whose sum is σ = 4127157216. Its totient is φ = 510222240.

The previous prime is 1683738697. The next prime is 1683738767. The reversal of 1683738738 is 8378373861.

1683738738 is a `hidden beast` number, since 168 + 373 + 87 + 38 = 666.

It is a super-2 number, since 2×1683738738² = 5669952275683665288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152131 + ... + 162822.

It is an arithmetic number, because the mean of its divisors is an integer number (85982442).

Almost surely, 2^1683738738 is an apocalyptic number.

1683738738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1683738738 is an abundant number, since it is smaller than the sum of its proper divisors (2443418478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1683738738 is a wasteful number, since it uses less digits than its factorization.

1683738738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314981 (or 314969 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 1683738738 is about 41033.3856511987. The cubic root of 1683738738 is about 1189.6655930163.

The spelling of 1683738738 in words is "one billion, six hundred eighty-three million, seven hundred thirty-eight thousand, seven hundred thirty-eight".