1904107397 has 4 divisors (see below), whose sum is σ = 1904221740. Its totient is φ = 1903993056.

The previous prime is 1904107379. The next prime is 1904107441. The reversal of 1904107397 is 7937014091.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 384199201 + 1519908196 = 19601^2 + 38986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1904107397 - 2⁶ = 1904107333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904107307) 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, 26822 + ... + 67287.

It is an arithmetic number, because the mean of its divisors is an integer number (476055435).

Almost surely, 2^1904107397 is an apocalyptic number.

It is an amenable number.

1904107397 is a deficient number, since it is larger than the sum of its proper divisors (114343).

1904107397 is an equidigital number, since it uses as much as digits as its factorization.

1904107397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114342.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 1904107397 is about 43636.0790745456. The cubic root of 1904107397 is about 1239.4541902844.

The spelling of 1904107397 in words is "one billion, nine hundred four million, one hundred seven thousand, three hundred ninety-seven".