1938147 has 8 divisors (see below), whose sum is σ = 2605056. Its totient is φ = 1281672.

The previous prime is 1938113. The next prime is 1938149. The reversal of 1938147 is 7418391.

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

It is not a de Polignac number, because 1938147 - 2⁸ = 1937891 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1938147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1938149) 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, 2163 + ... + 2924.

It is an arithmetic number, because the mean of its divisors is an integer number (325632).

2^1938147 is an apocalyptic number.

1938147 is a deficient number, since it is larger than the sum of its proper divisors (666909).

1938147 is a wasteful number, since it uses less digits than its factorization.

1938147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217.

The product of its digits is 6048, while the sum is 33.

The square root of 1938147 is about 1392.1734805691. The cubic root of 1938147 is about 124.6796490368.

The spelling of 1938147 in words is "one million, nine hundred thirty-eight thousand, one hundred forty-seven".