1319020001 has 8 divisors (see below), whose sum is σ = 1427696424. Its totient is φ = 1211374080.

The previous prime is 1319019983. The next prime is 1319020007. The reversal of 1319020001 is 1000209131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 502432225 + 816587776 = 22415^2 + 28576^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319020007) 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, 254960 + ... + 260081.

It is an arithmetic number, because the mean of its divisors is an integer number (178462053).

Almost surely, 2^1319020001 is an apocalyptic number.

It is an amenable number.

1319020001 is a deficient number, since it is larger than the sum of its proper divisors (108676423).

1319020001 is a wasteful number, since it uses less digits than its factorization.

1319020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515251.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1319020001 is about 36318.3149526516. The cubic root of 1319020001 is about 1096.6897733306.

Adding to 1319020001 its reverse (1000209131), we get a palindrome (2319229132).

The spelling of 1319020001 in words is "one billion, three hundred nineteen million, twenty thousand, one".