1206253957 has 2 divisors, whose sum is σ = 1206253958. Its totient is φ = 1206253956.

The previous prime is 1206253949. The next prime is 1206253967. The reversal of 1206253957 is 7593526021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858841636 + 347412321 = 29306^2 + 18639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206253957 - 2³ = 1206253949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206253967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603126978 + 603126979.

It is an arithmetic number, because the mean of its divisors is an integer number (603126979).

Almost surely, 2^1206253957 is an apocalyptic number.

It is an amenable number.

1206253957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206253957 is an equidigital number, since it uses as much as digits as its factorization.

1206253957 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 40.

The square root of 1206253957 is about 34731.1669397963. The cubic root of 1206253957 is about 1064.5014328272.

Adding to 1206253957 its reverse (7593526021), we get a palindrome (8799779978).

The spelling of 1206253957 in words is "one billion, two hundred six million, two hundred fifty-three thousand, nine hundred fifty-seven".