1683395943400 has 48 divisors (see below), whose sum is σ = 3926400173100. Its totient is φ = 671207047680.

The previous prime is 1683395943377. The next prime is 1683395943401. The reversal of 1683395943400 is 43495933861.

It can be written as a sum of positive squares in 6 ways, for example, as 545645187684 + 1137750755716 = 738678^2 + 1066654^2 .

It is not an unprimeable number, because it can be changed into a prime (1683395943401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13383055 + ... + 13508254.

Almost surely, 2^{1683395943400} is an apocalyptic number.

1683395943400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1683395943400 is an abundant number, since it is smaller than the sum of its proper divisors (2243004229700).

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

1683395943400 is a wasteful number, since it uses less digits than its factorization.

1683395943400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891638 (or 26891629 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 1683395943400 in words is "one trillion, six hundred eighty-three billion, three hundred ninety-five million, nine hundred forty-three thousand, four hundred".