1938204147 has 16 divisors (see below), whose sum is σ = 2824036992. Its totient is φ = 1172656320.

The previous prime is 1938204133. The next prime is 1938204157. The reversal of 1938204147 is 7414028391.

It is not a de Polignac number, because 1938204147 - 2⁷ = 1938204019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1938204127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30658 + ... + 69399.

It is an arithmetic number, because the mean of its divisors is an integer number (176502312).

Almost surely, 2^1938204147 is an apocalyptic number.

1938204147 is a deficient number, since it is larger than the sum of its proper divisors (885832845).

1938204147 is a wasteful number, since it uses less digits than its factorization.

1938204147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100658.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1938204147 is about 44025.0399999818. The cubic root of 1938204147 is about 1246.8087443365.

The spelling of 1938204147 in words is "one billion, nine hundred thirty-eight million, two hundred four thousand, one hundred forty-seven".