1938945625207 has 4 divisors (see below), whose sum is σ = 1971809110440. Its totient is φ = 1906082139976.

The previous prime is 1938945625171. The next prime is 1938945625291. The reversal of 1938945625207 is 7025265498391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1938945625207 - 2¹¹ = 1938945623159 is a prime.

It is a super-2 number, since 2×1938945625207² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938945625297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16431742528 + ... + 16431742645.

It is an arithmetic number, because the mean of its divisors is an integer number (492952277610).

It is a 1-persistent number, because it is pandigital, but 2⋅1938945625207 = 3877891250414 is not.

Almost surely, 2^{1938945625207} is an apocalyptic number.

1938945625207 is a deficient number, since it is larger than the sum of its proper divisors (32863485233).

1938945625207 is an equidigital number, since it uses as much as digits as its factorization.

1938945625207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32863485232.

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 1938945625207 in words is "one trillion, nine hundred thirty-eight billion, nine hundred forty-five million, six hundred twenty-five thousand, two hundred seven".