1000777161 has 8 divisors (see below), whose sum is σ = 1341356544. Its totient is φ = 663691280.

The previous prime is 1000777133. The next prime is 1000777201. The reversal of 1000777161 is 1617770001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000777161 - 2¹⁹ = 1000252873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000777121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872706 + ... + 873851.

It is an arithmetic number, because the mean of its divisors is an integer number (167669568).

Almost surely, 2^1000777161 is an apocalyptic number.

It is an amenable number.

1000777161 is a deficient number, since it is larger than the sum of its proper divisors (340579383).

1000777161 is a wasteful number, since it uses less digits than its factorization.

1000777161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746751.

The product of its (nonzero) digits is 2058, while the sum is 30.

The square root of 1000777161 is about 31635.0622095168. The cubic root of 1000777161 is about 1000.2589865868.

The spelling of 1000777161 in words is "one billion, seven hundred seventy-seven thousand, one hundred sixty-one".