1938161037 has 4 divisors (see below), whose sum is σ = 2584214720. Its totient is φ = 1292107356.

The previous prime is 1938160997. The next prime is 1938161077. The reversal of 1938161037 is 7301618391.

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.

It is an interprime number because it is at equal distance from previous prime (1938160997) and next prime (1938161077).

It is not a de Polignac number, because 1938161037 - 2⁷ = 1938160909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1938160986 and 1938161004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938161077) 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 in 3 ways as a sum of consecutive naturals, for example, 323026837 + ... + 323026842.

It is an arithmetic number, because the mean of its divisors is an integer number (646053680).

Almost surely, 2^1938161037 is an apocalyptic number.

It is an amenable number.

1938161037 is a deficient number, since it is larger than the sum of its proper divisors (646053683).

1938161037 is an equidigital number, since it uses as much as digits as its factorization.

1938161037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646053682.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 1938161037 is about 44024.5503895270. The cubic root of 1938161037 is about 1246.7995003286.

The spelling of 1938161037 in words is "one billion, nine hundred thirty-eight million, one hundred sixty-one thousand, thirty-seven".