1401800017 has 2 divisors, whose sum is σ = 1401800018. Its totient is φ = 1401800016.

The previous prime is 1401800003. The next prime is 1401800039. The reversal of 1401800017 is 7100081041.

It is an a-pointer prime, because the next prime (1401800039) can be obtained adding 1401800017 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108157521 + 293642496 = 33289^2 + 17136^2 .

It is an emirp because it is prime and its reverse (7100081041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401800017 is a prime.

It is a super-2 number, since 2×1401800017² = 3930086575322400578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1401800087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700900008 + 700900009.

It is an arithmetic number, because the mean of its divisors is an integer number (700900009).

Almost surely, 2^1401800017 is an apocalyptic number.

It is an amenable number.

1401800017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401800017 is an equidigital number, since it uses as much as digits as its factorization.

1401800017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 1401800017 is about 37440.6198800180. The cubic root of 1401800017 is about 1119.1681793967.

Adding to 1401800017 its reverse (7100081041), we get a palindrome (8501881058).

The spelling of 1401800017 in words is "one billion, four hundred one million, eight hundred thousand, seventeen".