1081070172 has 192 divisors, whose sum is σ = 3470423040. Its totient is φ = 283398912.

The previous prime is 1081070153. The next prime is 1081070183. The reversal of 1081070172 is 2710701801.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3115303 + ... + 3115649.

It is an arithmetic number, because the mean of its divisors is an integer number (18075120).

Almost surely, 2^1081070172 is an apocalyptic number.

1081070172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081070172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1735211520).

1081070172 is an abundant number, since it is smaller than the sum of its proper divisors (2389352868).

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

1081070172 is a wasteful number, since it uses less digits than its factorization.

1081070172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 1081070172 is about 32879.6315672789. The cubic root of 1081070172 is about 1026.3243391676.

Adding to 1081070172 its reverse (2710701801), we get a palindrome (3791771973).

The spelling of 1081070172 in words is "one billion, eighty-one million, seventy thousand, one hundred seventy-two".