1376897989169 has 2 divisors, whose sum is σ = 1376897989170. Its totient is φ = 1376897989168.

The previous prime is 1376897989153. The next prime is 1376897989189. The reversal of 1376897989169 is 9619897986731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207499892769 + 169398096400 = 1098863^2 + 411580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376897989169 - 2⁴ = 1376897989153 is a prime.

It is a super-2 number, since 2×1376897989169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1376897989139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688448994584 + 688448994585.

It is an arithmetic number, because the mean of its divisors is an integer number (688448994585).

Almost surely, 2^{1376897989169} is an apocalyptic number.

It is an amenable number.

1376897989169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376897989169 is an equidigital number, since it uses as much as digits as its factorization.

1376897989169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222131968, while the sum is 83.

The spelling of 1376897989169 in words is "one trillion, three hundred seventy-six billion, eight hundred ninety-seven million, nine hundred eighty-nine thousand, one hundred sixty-nine".