1001164857 has 32 divisors (see below), whose sum is σ = 1666344960. Its totient is φ = 519438720.

The previous prime is 1001164849. The next prime is 1001164897. The reversal of 1001164857 is 7584611001.

It is a happy number.

1001164857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001164857 - 2³ = 1001164849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1001164837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224869 + ... + 229277.

It is an arithmetic number, because the mean of its divisors is an integer number (52073280).

Almost surely, 2^1001164857 is an apocalyptic number.

It is an amenable number.

1001164857 is a deficient number, since it is larger than the sum of its proper divisors (665180103).

1001164857 is a wasteful number, since it uses less digits than its factorization.

1001164857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1001164857 is about 31641.1892475615. The cubic root of 1001164857 is about 1000.3881349984.

Adding to 1001164857 its reverse (7584611001), we get a palindrome (8585775858).

The spelling of 1001164857 in words is "one billion, one million, one hundred sixty-four thousand, eight hundred fifty-seven".