1105745639 has 2 divisors, whose sum is σ = 1105745640. Its totient is φ = 1105745638.

The previous prime is 1105745623. The next prime is 1105745647. The reversal of 1105745639 is 9365475011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1105745639 - 2⁴ = 1105745623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1105745596 and 1105745605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105745659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552872819 + 552872820.

It is an arithmetic number, because the mean of its divisors is an integer number (552872820).

Almost surely, 2^1105745639 is an apocalyptic number.

1105745639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105745639 is an equidigital number, since it uses as much as digits as its factorization.

1105745639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 1105745639 is about 33252.7538558839. The cubic root of 1105745639 is about 1034.0743009360.

The spelling of 1105745639 in words is "one billion, one hundred five million, seven hundred forty-five thousand, six hundred thirty-nine".