1904666401 has 8 divisors (see below), whose sum is σ = 2079742464. Its totient is φ = 1729911120.

The previous prime is 1904666389. The next prime is 1904666411. The reversal of 1904666401 is 1046664091.

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

It is a cyclic number.

It is not a de Polignac number, because 1904666401 - 2⁵ = 1904666369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1904666411) 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, 67690 + ... + 91603.

It is an arithmetic number, because the mean of its divisors is an integer number (259967808).

Almost surely, 2^1904666401 is an apocalyptic number.

1904666401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1904666401 is a deficient number, since it is larger than the sum of its proper divisors (175076063).

1904666401 is a wasteful number, since it uses less digits than its factorization.

1904666401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160391.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1904666401 is about 43642.4839004381. The cubic root of 1904666401 is about 1239.5754705686.

The spelling of 1904666401 in words is "one billion, nine hundred four million, six hundred sixty-six thousand, four hundred one".