1089723481 has 8 divisors (see below), whose sum is σ = 1358616384. Its totient is φ = 849135120.

The previous prime is 1089723469. The next prime is 1089723491. The reversal of 1089723481 is 1843279801.

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 1089723481 - 2⁷ = 1089723353 is a prime.

It is a super-2 number, since 2×1089723481² = 2374994530085514722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089723491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7076050 + ... + 7076203.

It is an arithmetic number, because the mean of its divisors is an integer number (169827048).

Almost surely, 2^1089723481 is an apocalyptic number.

1089723481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1089723481 is a deficient number, since it is larger than the sum of its proper divisors (268892903).

1089723481 is a wasteful number, since it uses less digits than its factorization.

1089723481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14152271.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1089723481 is about 33010.9600133047. The cubic root of 1089723481 is about 1029.0554324695.

The spelling of 1089723481 in words is "one billion, eighty-nine million, seven hundred twenty-three thousand, four hundred eighty-one".