1100145649 has 2 divisors, whose sum is σ = 1100145650. Its totient is φ = 1100145648.

The previous prime is 1100145589. The next prime is 1100145671. The reversal of 1100145649 is 9465410011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553755024 + 546390625 = 23532^2 + 23375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100145649 - 2¹³ = 1100137457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100145649.

It is not a weakly prime, because it can be changed into another prime (1100149649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550072824 + 550072825.

It is an arithmetic number, because the mean of its divisors is an integer number (550072825).

Almost surely, 2^1100145649 is an apocalyptic number.

It is an amenable number.

1100145649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100145649 is an equidigital number, since it uses as much as digits as its factorization.

1100145649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1100145649 is about 33168.4435721666. The cubic root of 1100145649 is about 1032.3256742234.

The spelling of 1100145649 in words is "one billion, one hundred million, one hundred forty-five thousand, six hundred forty-nine".