1938051517 has 8 divisors (see below), whose sum is σ = 1957084416. Its totient is φ = 1919035872.

The previous prime is 1938051491. The next prime is 1938051551. The reversal of 1938051517 is 7151508391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1938051517 - 2⁷ = 1938051389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938051517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938051217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433588 + ... + 438034.

It is an arithmetic number, because the mean of its divisors is an integer number (244635552).

Almost surely, 2^1938051517 is an apocalyptic number.

It is an amenable number.

1938051517 is a deficient number, since it is larger than the sum of its proper divisors (19032899).

1938051517 is a wasteful number, since it uses less digits than its factorization.

1938051517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8627.

The product of its (nonzero) digits is 37800, while the sum is 40.

The square root of 1938051517 is about 44023.3065205239. The cubic root of 1938051517 is about 1246.7760155148.

The spelling of 1938051517 in words is "one billion, nine hundred thirty-eight million, fifty-one thousand, five hundred seventeen".