1540404211 has 2 divisors, whose sum is σ = 1540404212. Its totient is φ = 1540404210.

The previous prime is 1540404193. The next prime is 1540404251. The reversal of 1540404211 is 1124040451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1540404211 - 2¹⁷ = 1540273139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540404251) 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, 770202105 + 770202106.

It is an arithmetic number, because the mean of its divisors is an integer number (770202106).

Almost surely, 2^1540404211 is an apocalyptic number.

1540404211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540404211 is an equidigital number, since it uses as much as digits as its factorization.

1540404211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1540404211 is about 39247.9835278196. The cubic root of 1540404211 is about 1154.9013767354.

Adding to 1540404211 its reverse (1124040451), we get a palindrome (2664444662).

The spelling of 1540404211 in words is "one billion, five hundred forty million, four hundred four thousand, two hundred eleven".