1081705672 has 8 divisors (see below), whose sum is σ = 2028198150. Its totient is φ = 540852832.

The previous prime is 1081705627. The next prime is 1081705679. The reversal of 1081705672 is 2765071801.

It can be written as a sum of positive squares in only one way, i.e., 826792516 + 254913156 = 28754^2 + 15966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1081705679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67606597 + ... + 67606612.

Almost surely, 2^1081705672 is an apocalyptic number.

It is an amenable number.

1081705672 is a deficient number, since it is larger than the sum of its proper divisors (946492478).

1081705672 is a wasteful number, since it uses less digits than its factorization.

1081705672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135213215 (or 135213211 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1081705672 is about 32889.2941851904. The cubic root of 1081705672 is about 1026.5254057815.

The spelling of 1081705672 in words is "one billion, eighty-one million, seven hundred five thousand, six hundred seventy-two".