1205690023 has 2 divisors, whose sum is σ = 1205690024. Its totient is φ = 1205690022.

The previous prime is 1205689987. The next prime is 1205690027. The reversal of 1205690023 is 3200965021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1205690023 - 2²⁹ = 668819111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205689973 and 1205690000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205690027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602845011 + 602845012.

It is an arithmetic number, because the mean of its divisors is an integer number (602845012).

Almost surely, 2^1205690023 is an apocalyptic number.

1205690023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205690023 is an equidigital number, since it uses as much as digits as its factorization.

1205690023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1205690023 is about 34723.0474325051. The cubic root of 1205690023 is about 1064.3355191400.

The spelling of 1205690023 in words is "one billion, two hundred five million, six hundred ninety thousand, twenty-three".