1401171065 has 16 divisors (see below), whose sum is σ = 1925184000. Its totient is φ = 959014080.

The previous prime is 1401171053. The next prime is 1401171071. The reversal of 1401171065 is 5601711041.

It is a happy number.

It is not a de Polignac number, because 1401171065 - 2⁴ = 1401171049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18065 + ... + 55934.

It is an arithmetic number, because the mean of its divisors is an integer number (120324000).

Almost surely, 2^1401171065 is an apocalyptic number.

It is an amenable number.

1401171065 is a deficient number, since it is larger than the sum of its proper divisors (524012935).

1401171065 is an equidigital number, since it uses as much as digits as its factorization.

1401171065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74552.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 1401171065 is about 37432.2196109181. The cubic root of 1401171065 is about 1119.0007735954. Note that the first 3 decimals are identical.

The spelling of 1401171065 in words is "one billion, four hundred one million, one hundred seventy-one thousand, sixty-five".