1938419390 has 16 divisors (see below), whose sum is σ = 3694399632. Its totient is φ = 729757824.

The previous prime is 1938419389. The next prime is 1938419393. The reversal of 1938419390 is 939148391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938419393) 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, 5701064 + ... + 5701403.

It is an arithmetic number, because the mean of its divisors is an integer number (230899977).

Almost surely, 2^1938419390 is an apocalyptic number.

1938419390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1938419390 is a deficient number, since it is larger than the sum of its proper divisors (1755980242).

1938419390 is a wasteful number, since it uses less digits than its factorization.

1938419390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402491.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 1938419390 is about 44027.4844841265. The cubic root of 1938419390 is about 1246.8548964960.

The spelling of 1938419390 in words is "one billion, nine hundred thirty-eight million, four hundred nineteen thousand, three hundred ninety".