1936418521 has 2 divisors, whose sum is σ = 1936418522. Its totient is φ = 1936418520.

The previous prime is 1936418501. The next prime is 1936418543. The reversal of 1936418521 is 1258146391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1353872025 + 582546496 = 36795^2 + 24136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1936418521 - 2¹⁵ = 1936385753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1936418501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968209260 + 968209261.

It is an arithmetic number, because the mean of its divisors is an integer number (968209261).

Almost surely, 2^1936418521 is an apocalyptic number.

It is an amenable number.

1936418521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936418521 is an equidigital number, since it uses as much as digits as its factorization.

1936418521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 1936418521 is about 44004.7556634507. The cubic root of 1936418521 is about 1246.4257406239.

The spelling of 1936418521 in words is "one billion, nine hundred thirty-six million, four hundred eighteen thousand, five hundred twenty-one".