1105785157 has 2 divisors, whose sum is σ = 1105785158. Its totient is φ = 1105785156.

The previous prime is 1105785151. The next prime is 1105785193. The reversal of 1105785157 is 7515875011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744252961 + 361532196 = 27281^2 + 19014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105785157 - 2⁷ = 1105785029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105785151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552892578 + 552892579.

It is an arithmetic number, because the mean of its divisors is an integer number (552892579).

Almost surely, 2^1105785157 is an apocalyptic number.

It is an amenable number.

1105785157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105785157 is an equidigital number, since it uses as much as digits as its factorization.

1105785157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 40.

The square root of 1105785157 is about 33253.3480570002. The cubic root of 1105785157 is about 1034.0866196405.

The spelling of 1105785157 in words is "one billion, one hundred five million, seven hundred eighty-five thousand, one hundred fifty-seven".