1904126081 has 8 divisors (see below), whose sum is σ = 2237015424. Its totient is φ = 1597867920.

The previous prime is 1904126053. The next prime is 1904126137. The reversal of 1904126081 is 1806214091.

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

It is not a de Polignac number, because 1904126081 - 2⁶ = 1904126017 is a prime.

It is a super-2 number, since 2×1904126081² = 7251392264688837122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1904126011) 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, 6657641 + ... + 6657926.

It is an arithmetic number, because the mean of its divisors is an integer number (279626928).

Almost surely, 2^1904126081 is an apocalyptic number.

1904126081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1904126081 is a deficient number, since it is larger than the sum of its proper divisors (332889343).

1904126081 is a wasteful number, since it uses less digits than its factorization.

1904126081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315591.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1904126081 is about 43636.2931629166. The cubic root of 1904126081 is about 1239.4582443076.

The spelling of 1904126081 in words is "one billion, nine hundred four million, one hundred twenty-six thousand, eighty-one".