1904362321 has 15 divisors (see below), whose sum is σ = 2036872173. Its totient is φ = 1780471200.

The previous prime is 1904362319. The next prime is 1904362363. The reversal of 1904362321 is 1232634091.

The square root of 1904362321 is 43639.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 591024721 + 1313337600 = 24311^2 + 36240^2 .

It is not a de Polignac number, because 1904362321 - 2¹ = 1904362319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1904360321) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12611596 + ... + 12611746.

Almost surely, 2^1904362321 is an apocalyptic number.

1904362321 is the 43639-th square number.

1904362321 is the 21820-th centered octagonal number.

It is an amenable number.

1904362321 is a deficient number, since it is larger than the sum of its proper divisors (132509852).

1904362321 is an frugal number, since it uses more digits than its factorization.

1904362321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The cubic root of 1904362321 is about 1239.5095009812.

The spelling of 1904362321 in words is "one billion, nine hundred four million, three hundred sixty-two thousand, three hundred twenty-one".