1081775601 has 8 divisors (see below), whose sum is σ = 1602630560. Its totient is φ = 721183716.

The previous prime is 1081775567. The next prime is 1081775663. The reversal of 1081775601 is 1065771801.

It is a happy number.

1081775601 is a `hidden beast` number, since 10 + 81 + 7 + 7 + 560 + 1 = 666.

It is not a de Polignac number, because 1081775601 - 2¹⁹ = 1081251313 is a prime.

It is a super-2 number, since 2×1081775601² = 2340476901837822402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081775801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20032855 + ... + 20032908.

It is an arithmetic number, because the mean of its divisors is an integer number (200328820).

Almost surely, 2^1081775601 is an apocalyptic number.

It is an amenable number.

1081775601 is a deficient number, since it is larger than the sum of its proper divisors (520854959).

1081775601 is an equidigital number, since it uses as much as digits as its factorization.

1081775601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40065772 (or 40065766 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The square root of 1081775601 is about 32890.3572647060. The cubic root of 1081775601 is about 1026.5475258924.

The spelling of 1081775601 in words is "one billion, eighty-one million, seven hundred seventy-five thousand, six hundred one".