1081390385669 has 8 divisors (see below), whose sum is σ = 1249092638208. Its totient is φ = 925253805760.

The previous prime is 1081390385651. The next prime is 1081390385687. The reversal of 1081390385669 is 9665830931801.

It is an interprime number because it is at equal distance from previous prime (1081390385651) and next prime (1081390385687).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081390385669 - 2¹² = 1081390381573 is a prime.

It is a super-2 number, since 2×1081390385669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081390385629) 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 in 7 ways as a sum of consecutive naturals, for example, 2891417957 + ... + 2891418330.

It is an arithmetic number, because the mean of its divisors is an integer number (156136579776).

Almost surely, 2^{1081390385669} is an apocalyptic number.

It is an amenable number.

1081390385669 is a deficient number, since it is larger than the sum of its proper divisors (167702252539).

1081390385669 is a wasteful number, since it uses less digits than its factorization.

1081390385669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782836315.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 1081390385669 in words is "one trillion, eighty-one billion, three hundred ninety million, three hundred eighty-five thousand, six hundred sixty-nine".