992621543 has 2 divisors, whose sum is σ = 992621544. Its totient is φ = 992621542.

The previous prime is 992621501. The next prime is 992621561. The reversal of 992621543 is 345126299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992621543 - 2²⁸ = 724186087 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992621543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992621563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496310771 + 496310772.

It is an arithmetic number, because the mean of its divisors is an integer number (496310772).

Almost surely, 2^992621543 is an apocalyptic number.

992621543 is a deficient number, since it is larger than the sum of its proper divisors (1).

992621543 is an equidigital number, since it uses as much as digits as its factorization.

992621543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 992621543 is about 31505.8969559668. The cubic root of 992621543 is about 997.5344403450.

The spelling of 992621543 in words is "nine hundred ninety-two million, six hundred twenty-one thousand, five hundred forty-three".