1111899601 has 2 divisors, whose sum is σ = 1111899602. Its totient is φ = 1111899600.

The previous prime is 1111899583. The next prime is 1111899611. The reversal of 1111899601 is 1069981111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592971201 + 518928400 = 24351^2 + 22780^2 .

It is an emirp because it is prime and its reverse (1069981111) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1096681111 and 1111866901.

It is a cyclic number.

It is not a de Polignac number, because 1111899601 - 2¹⁹ = 1111375313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111899611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555949800 + 555949801.

It is an arithmetic number, because the mean of its divisors is an integer number (555949801).

Almost surely, 2^1111899601 is an apocalyptic number.

It is an amenable number.

1111899601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111899601 is an equidigital number, since it uses as much as digits as its factorization.

1111899601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 37.

The square root of 1111899601 is about 33345.1585841183. The cubic root of 1111899601 is about 1035.9891128609.

The spelling of 1111899601 in words is "one billion, one hundred eleven million, eight hundred ninety-nine thousand, six hundred one".