1240198937 has 2 divisors, whose sum is σ = 1240198938. Its totient is φ = 1240198936.

The previous prime is 1240198931. The next prime is 1240198957. The reversal of 1240198937 is 7398910421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212362761 + 27836176 = 34819^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240198937 - 2⁸ = 1240198681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240198931) 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, 620099468 + 620099469.

It is an arithmetic number, because the mean of its divisors is an integer number (620099469).

Almost surely, 2^1240198937 is an apocalyptic number.

It is an amenable number.

1240198937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240198937 is an equidigital number, since it uses as much as digits as its factorization.

1240198937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1240198937 is about 35216.4583256182. The cubic root of 1240198937 is about 1074.3945209797.

The spelling of 1240198937 in words is "one billion, two hundred forty million, one hundred ninety-eight thousand, nine hundred thirty-seven".