1421165293 has 2 divisors, whose sum is σ = 1421165294. Its totient is φ = 1421165292.

The previous prime is 1421165233. The next prime is 1421165297. The reversal of 1421165293 is 3925611241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 789497604 + 631667689 = 28098^2 + 25133^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421165293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421165297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710582646 + 710582647.

It is an arithmetic number, because the mean of its divisors is an integer number (710582647).

Almost surely, 2^1421165293 is an apocalyptic number.

It is an amenable number.

1421165293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421165293 is an equidigital number, since it uses as much as digits as its factorization.

1421165293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 1421165293 is about 37698.3460247263. The cubic root of 1421165293 is about 1124.2982403347.

The spelling of 1421165293 in words is "one billion, four hundred twenty-one million, one hundred sixty-five thousand, two hundred ninety-three".