1001315641 has 2 divisors, whose sum is σ = 1001315642. Its totient is φ = 1001315640.

The previous prime is 1001315621. The next prime is 1001315659. The reversal of 1001315641 is 1465131001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 601475625 + 399840016 = 24525^2 + 19996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001315641 - 2⁹ = 1001315129 is a prime.

It is a super-2 number, since 2×1001315641² = 2005266025822481762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001315621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500657820 + 500657821.

It is an arithmetic number, because the mean of its divisors is an integer number (500657821).

Almost surely, 2^1001315641 is an apocalyptic number.

It is an amenable number.

1001315641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001315641 is an equidigital number, since it uses as much as digits as its factorization.

1001315641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1001315641 is about 31643.5718748690. The cubic root of 1001315641 is about 1000.4383548170.

Adding to 1001315641 its reverse (1465131001), we get a palindrome (2466446642).

The spelling of 1001315641 in words is "one billion, one million, three hundred fifteen thousand, six hundred forty-one".