1118941541 has 2 divisors, whose sum is σ = 1118941542. Its totient is φ = 1118941540.

The previous prime is 1118941517. The next prime is 1118941561. The reversal of 1118941541 is 1451498111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 849489316 + 269452225 = 29146^2 + 16415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118941541 - 2⁶ = 1118941477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118941561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559470770 + 559470771.

It is an arithmetic number, because the mean of its divisors is an integer number (559470771).

Almost surely, 2^1118941541 is an apocalyptic number.

It is an amenable number.

1118941541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118941541 is an equidigital number, since it uses as much as digits as its factorization.

1118941541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 35.

The square root of 1118941541 is about 33450.5835674058. The cubic root of 1118941541 is about 1038.1715718956.

The spelling of 1118941541 in words is "one billion, one hundred eighteen million, nine hundred forty-one thousand, five hundred forty-one".