1113556901 has 2 divisors, whose sum is σ = 1113556902. Its totient is φ = 1113556900.

The previous prime is 1113556889. The next prime is 1113556909. The reversal of 1113556901 is 1096553111.

It is a Cunningham number, because it is equal to 33370²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113556900 + 1 = 33370^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113556901 - 2¹⁴ = 1113540517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113556909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556778450 + 556778451.

It is an arithmetic number, because the mean of its divisors is an integer number (556778451).

Almost surely, 2^1113556901 is an apocalyptic number.

It is an amenable number.

1113556901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113556901 is an equidigital number, since it uses as much as digits as its factorization.

1113556901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 1113556901 is about 33370.0000149835. Note that the first 4 decimals coincide. The cubic root of 1113556901 is about 1036.5035755032.

The spelling of 1113556901 in words is "one billion, one hundred thirteen million, five hundred fifty-six thousand, nine hundred one".