1842049621 has 2 divisors, whose sum is σ = 1842049622. Its totient is φ = 1842049620.

The previous prime is 1842049613. The next prime is 1842049717. The reversal of 1842049621 is 1269402481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606887396 + 235162225 = 40086^2 + 15335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1842049621 - 2³ = 1842049613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1842049721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921024810 + 921024811.

It is an arithmetic number, because the mean of its divisors is an integer number (921024811).

Almost surely, 2^1842049621 is an apocalyptic number.

It is an amenable number.

1842049621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1842049621 is an equidigital number, since it uses as much as digits as its factorization.

1842049621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1842049621 is about 42919.1055475298. The cubic root of 1842049621 is about 1225.8399616968.

The spelling of 1842049621 in words is "one billion, eight hundred forty-two million, forty-nine thousand, six hundred twenty-one".