1081697670 has 96 divisors (see below), whose sum is σ = 2935898784. Its totient is φ = 276057600.

The previous prime is 1081697609. The next prime is 1081697671. The reversal of 1081697670 is 767961801.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081697671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192805 + ... + 198335.

It is an arithmetic number, because the mean of its divisors is an integer number (30582279).

Almost surely, 2^1081697670 is an apocalyptic number.

1081697670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081697670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467949392).

1081697670 is an abundant number, since it is smaller than the sum of its proper divisors (1854201114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1081697670 is a wasteful number, since it uses less digits than its factorization.

1081697670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638 (or 5635 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1081697670 is about 32889.1725344375. The cubic root of 1081697670 is about 1026.5228745086.

The spelling of 1081697670 in words is "one billion, eighty-one million, six hundred ninety-seven thousand, six hundred seventy".