1081697272 has 8 divisors (see below), whose sum is σ = 2028182400. Its totient is φ = 540848632.

The previous prime is 1081697263. The next prime is 1081697329. The reversal of 1081697272 is 2727961801.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67606072 + ... + 67606087.

It is an arithmetic number, because the mean of its divisors is an integer number (253522800).

Almost surely, 2^1081697272 is an apocalyptic number.

It is an amenable number.

1081697272 is a deficient number, since it is larger than the sum of its proper divisors (946485128).

1081697272 is a wasteful number, since it uses less digits than its factorization.

1081697272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135212165 (or 135212161 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 1081697272 is about 32889.1664838135. The cubic root of 1081697272 is about 1026.5227486090.

The spelling of 1081697272 in words is "one billion, eighty-one million, six hundred ninety-seven thousand, two hundred seventy-two".