1081780713 has 48 divisors (see below), whose sum is σ = 1812690880. Its totient is φ = 615952512.

The previous prime is 1081780697. The next prime is 1081780747. The reversal of 1081780713 is 3170871801.

It is not a de Polignac number, because 1081780713 - 2⁴ = 1081780697 is a prime.

It is a super-2 number, since 2×1081780713² = 2340499022037576738, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1081780783) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89931 + ... + 101247.

Almost surely, 2^1081780713 is an apocalyptic number.

1081780713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1081780713 is a deficient number, since it is larger than the sum of its proper divisors (730910167).

1081780713 is a wasteful number, since it uses less digits than its factorization.

1081780713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398 (or 11395 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The square root of 1081780713 is about 32890.4349773608. The cubic root of 1081780713 is about 1026.5491428952.

The spelling of 1081780713 in words is "one billion, eighty-one million, seven hundred eighty thousand, seven hundred thirteen".