1938853537 has 4 divisors (see below), whose sum is σ = 2040898480. Its totient is φ = 1836808596.

The previous prime is 1938853513. The next prime is 1938853583. The reversal of 1938853537 is 7353588391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7353588391 = 17 ⋅432564023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1938853537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938853337) 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, 51022443 + ... + 51022480.

It is an arithmetic number, because the mean of its divisors is an integer number (510224620).

Almost surely, 2^1938853537 is an apocalyptic number.

It is an amenable number.

1938853537 is a deficient number, since it is larger than the sum of its proper divisors (102044943).

1938853537 is a wasteful number, since it uses less digits than its factorization.

1938853537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102044942.

The product of its digits is 2721600, while the sum is 52.

The square root of 1938853537 is about 44032.4146169614. The cubic root of 1938853537 is about 1246.9479754083.

The spelling of 1938853537 in words is "one billion, nine hundred thirty-eight million, eight hundred fifty-three thousand, five hundred thirty-seven".