1143692621 has 2 divisors, whose sum is σ = 1143692622. Its totient is φ = 1143692620.

The previous prime is 1143692587. The next prime is 1143692623. The reversal of 1143692621 is 1262963411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140412900 + 3279721 = 33770^2 + 1811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143692621 is a prime.

It is a super-2 number, since 2×1143692621² = 2616065622659699282, which contains 22 as substring.

Together with 1143692623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143692623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571846310 + 571846311.

It is an arithmetic number, because the mean of its divisors is an integer number (571846311).

Almost surely, 2^1143692621 is an apocalyptic number.

It is an amenable number.

1143692621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143692621 is an equidigital number, since it uses as much as digits as its factorization.

1143692621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 1143692621 is about 33818.5248199859. The cubic root of 1143692621 is about 1045.7706275863.

The spelling of 1143692621 in words is "one billion, one hundred forty-three million, six hundred ninety-two thousand, six hundred twenty-one".