1001098493 has 2 divisors, whose sum is σ = 1001098494. Its totient is φ = 1001098492.

The previous prime is 1001098477. The next prime is 1001098519. The reversal of 1001098493 is 3948901001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 761870404 + 239228089 = 27602^2 + 15467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001098493 - 2⁴ = 1001098477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001098403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500549246 + 500549247.

It is an arithmetic number, because the mean of its divisors is an integer number (500549247).

Almost surely, 2^1001098493 is an apocalyptic number.

It is an amenable number.

1001098493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001098493 is an equidigital number, since it uses as much as digits as its factorization.

1001098493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1001098493 is about 31640.1405338219. The cubic root of 1001098493 is about 1000.3660303388.

Adding to 1001098493 its reverse (3948901001), we get a palindrome (4949999494).

The spelling of 1001098493 in words is "one billion, one million, ninety-eight thousand, four hundred ninety-three".