1089660368 has 10 divisors (see below), whose sum is σ = 2111216994. Its totient is φ = 544830176.

The previous prime is 1089660367. The next prime is 1089660371. The reversal of 1089660368 is 8630669801.

It can be written as a sum of positive squares in only one way, i.e., 714385984 + 375274384 = 26728^2 + 19372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089660367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34051871 + ... + 34051902.

Almost surely, 2^1089660368 is an apocalyptic number.

It is an amenable number.

1089660368 is a deficient number, since it is larger than the sum of its proper divisors (1021556626).

1089660368 is an equidigital number, since it uses as much as digits as its factorization.

1089660368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68103781 (or 68103775 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1089660368 is about 33010.0040593757. The cubic root of 1089660368 is about 1029.0355656468.

The spelling of 1089660368 in words is "one billion, eighty-nine million, six hundred sixty thousand, three hundred sixty-eight".