1997925362707 has 2 divisors, whose sum is σ = 1997925362708. Its totient is φ = 1997925362706.

The previous prime is 1997925362677. The next prime is 1997925362773. The reversal of 1997925362707 is 7072635297991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1997925362707 - 2³¹ = 1995777879059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1997925362107) 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, 998962681353 + 998962681354.

It is an arithmetic number, because the mean of its divisors is an integer number (998962681354).

Almost surely, 2^{1997925362707} is an apocalyptic number.

1997925362707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1997925362707 is an equidigital number, since it uses as much as digits as its factorization.

1997925362707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90016920, while the sum is 67.

It can be divided in two parts, 1997925 and 362707, that added together give a palindrome (2360632).

The spelling of 1997925362707 in words is "one trillion, nine hundred ninety-seven billion, nine hundred twenty-five million, three hundred sixty-two thousand, seven hundred seven".