1999748053 has 2 divisors, whose sum is σ = 1999748054. Its totient is φ = 1999748052.

The previous prime is 1999748033. The next prime is 1999748071. The reversal of 1999748053 is 3508479991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1638063729 + 361684324 = 40473^2 + 19018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1999748053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1999747985 and 1999748003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1999748033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999874026 + 999874027.

It is an arithmetic number, because the mean of its divisors is an integer number (999874027).

Almost surely, 2^1999748053 is an apocalyptic number.

It is an amenable number.

1999748053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999748053 is an equidigital number, since it uses as much as digits as its factorization.

1999748053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 1999748053 is about 44718.5426081844. The cubic root of 1999748053 is about 1259.8681421184.

The spelling of 1999748053 in words is "one billion, nine hundred ninety-nine million, seven hundred forty-eight thousand, fifty-three".