1894139395 has 16 divisors (see below), whose sum is σ = 2320983360. Its totient is φ = 1483605504.

The previous prime is 1894139389. The next prime is 1894139399. The reversal of 1894139395 is 5939314981.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1894139395 - 2⁷ = 1894139267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1894139399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31066 + ... + 68944.

It is an arithmetic number, because the mean of its divisors is an integer number (145061460).

Almost surely, 2^1894139395 is an apocalyptic number.

1894139395 is a deficient number, since it is larger than the sum of its proper divisors (426843965).

1894139395 is a wasteful number, since it uses less digits than its factorization.

1894139395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38094.

The product of its digits is 1049760, while the sum is 52.

The square root of 1894139395 is about 43521.7117655085. The cubic root of 1894139395 is about 1237.2875575870.

The spelling of 1894139395 in words is "one billion, eight hundred ninety-four million, one hundred thirty-nine thousand, three hundred ninety-five".