1071820755 has 24 divisors (see below), whose sum is σ = 1926633072. Its totient is φ = 571637088.

The previous prime is 1071820751. The next prime is 1071820817. The reversal of 1071820755 is 5570281701.

It is not a de Polignac number, because 1071820755 - 2² = 1071820751 is a prime.

It is a super-2 number, since 2×1071820755² = 2297599461697540050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071820751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439864 + ... + 442293.

It is an arithmetic number, because the mean of its divisors is an integer number (80276378).

Almost surely, 2^1071820755 is an apocalyptic number.

1071820755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1071820755 is a deficient number, since it is larger than the sum of its proper divisors (854812317).

1071820755 is an frugal number, since it uses more digits than its factorization.

1071820755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882177 (or 882165 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 1071820755 is about 32738.6736903009. The cubic root of 1071820755 is about 1023.3889440460.

The spelling of 1071820755 in words is "one billion, seventy-one million, eight hundred twenty thousand, seven hundred fifty-five".