1976387829473 has 2 divisors, whose sum is σ = 1976387829474. Its totient is φ = 1976387829472.

The previous prime is 1976387829457. The next prime is 1976387829491. The reversal of 1976387829473 is 3749287836791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1932636577249 + 43751252224 = 1390193^2 + 209168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1976387829473 - 2⁴ = 1976387829457 is a prime.

It is a super-2 number, since 2×1976387829473² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1976387829473.

It is not a weakly prime, because it can be changed into another prime (1976387829413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988193914736 + 988193914737.

It is an arithmetic number, because the mean of its divisors is an integer number (988193914737).

Almost surely, 2^{1976387829473} is an apocalyptic number.

It is an amenable number.

1976387829473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1976387829473 is an equidigital number, since it uses as much as digits as its factorization.

1976387829473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768144384, while the sum is 74.

The spelling of 1976387829473 in words is "one trillion, nine hundred seventy-six billion, three hundred eighty-seven million, eight hundred twenty-nine thousand, four hundred seventy-three".