1032728507381 has 2 divisors, whose sum is σ = 1032728507382. Its totient is φ = 1032728507380.

The previous prime is 1032728507357. The next prime is 1032728507383. The reversal of 1032728507381 is 1837058272301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846593211025 + 186135296356 = 920105^2 + 431434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1032728507381 is a prime.

It is a super-2 number, since 2×1032728507381² (a number of 25 digits) contains 22 as substring.

Together with 1032728507383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1032728507383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516364253690 + 516364253691.

It is an arithmetic number, because the mean of its divisors is an integer number (516364253691).

Almost surely, 2^{1032728507381} is an apocalyptic number.

It is an amenable number.

1032728507381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1032728507381 is an equidigital number, since it uses as much as digits as its factorization.

1032728507381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 1032728507381 in words is "one trillion, thirty-two billion, seven hundred twenty-eight million, five hundred seven thousand, three hundred eighty-one".