1201339957 has 2 divisors, whose sum is σ = 1201339958. Its totient is φ = 1201339956.

The previous prime is 1201339943. The next prime is 1201339963. The reversal of 1201339957 is 7599331021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1175186961 + 26152996 = 34281^2 + 5114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201339957 - 2¹⁹ = 1200815669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201339927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600669978 + 600669979.

It is an arithmetic number, because the mean of its divisors is an integer number (600669979).

Almost surely, 2^1201339957 is an apocalyptic number.

It is an amenable number.

1201339957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201339957 is an equidigital number, since it uses as much as digits as its factorization.

1201339957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 1201339957 is about 34660.3513686748. The cubic root of 1201339957 is about 1063.0539544939.

The spelling of 1201339957 in words is "one billion, two hundred one million, three hundred thirty-nine thousand, nine hundred fifty-seven".