1037684818981 has 2 divisors, whose sum is σ = 1037684818982. Its totient is φ = 1037684818980.

The previous prime is 1037684818867. The next prime is 1037684819033. The reversal of 1037684818981 is 1898184867301.

1037684818981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525900536100 + 511784282881 = 725190^2 + 715391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1037684818981 - 2⁷ = 1037684818853 is a prime.

It is a super-2 number, since 2×1037684818981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1037684818081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 518842409490 + 518842409491.

It is an arithmetic number, because the mean of its divisors is an integer number (518842409491).

Almost surely, 2^{1037684818981} is an apocalyptic number.

It is an amenable number.

1037684818981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1037684818981 is an equidigital number, since it uses as much as digits as its factorization.

1037684818981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18579456, while the sum is 64.

The spelling of 1037684818981 in words is "one trillion, thirty-seven billion, six hundred eighty-four million, eight hundred eighteen thousand, nine hundred eighty-one".