1904780226 has 16 divisors (see below), whose sum is σ = 3810907584. Its totient is φ = 634702224.

The previous prime is 1904780221. The next prime is 1904780281. The reversal of 1904780226 is 6220874091.

It is a super-2 number, since 2×1904780226² = 7256375418721222152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1904780221) 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 7 ways as a sum of consecutive naturals, for example, 37261 + ... + 72096.

It is an arithmetic number, because the mean of its divisors is an integer number (238181724).

Almost surely, 2^1904780226 is an apocalyptic number.

1904780226 is an abundant number, since it is smaller than the sum of its proper divisors (1906127358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1904780226 is a wasteful number, since it uses less digits than its factorization.

1904780226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112265.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1904780226 is about 43643.7879428447. The cubic root of 1904780226 is about 1239.6001628834.

The spelling of 1904780226 in words is "one billion, nine hundred four million, seven hundred eighty thousand, two hundred twenty-six".