1081980669 has 96 divisors (see below), whose sum is σ = 1940055040. Its totient is φ = 523480320.

The previous prime is 1081980661. The next prime is 1081980671. The reversal of 1081980669 is 9660891801.

It is not a de Polignac number, because 1081980669 - 2³ = 1081980661 is a prime.

It is a super-2 number, since 2×1081980669² = 2341364336179375122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081980661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3524214 + ... + 3524520.

Almost surely, 2^1081980669 is an apocalyptic number.

1081980669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1081980669 is a deficient number, since it is larger than the sum of its proper divisors (858074371).

1081980669 is a wasteful number, since it uses less digits than its factorization.

1081980669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 1081980669 is about 32893.4745656338. The cubic root of 1081980669 is about 1026.6123880034.

The spelling of 1081980669 in words is "one billion, eighty-one million, nine hundred eighty thousand, six hundred sixty-nine".