1021104493 has 2 divisors, whose sum is σ = 1021104494. Its totient is φ = 1021104492.

The previous prime is 1021104451. The next prime is 1021104523. The reversal of 1021104493 is 3944011201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640191204 + 380913289 = 25302^2 + 19517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021104493 is a prime.

It is a super-3 number, since 3×1021104493³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021101493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510552246 + 510552247.

It is an arithmetic number, because the mean of its divisors is an integer number (510552247).

Almost surely, 2^1021104493 is an apocalyptic number.

It is an amenable number.

1021104493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021104493 is an equidigital number, since it uses as much as digits as its factorization.

1021104493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1021104493 is about 31954.7256755554. The cubic root of 1021104493 is about 1006.9859143561.

Adding to 1021104493 its reverse (3944011201), we get a palindrome (4965115694).

The spelling of 1021104493 in words is "one billion, twenty-one million, one hundred four thousand, four hundred ninety-three".