1905454056 has 32 divisors (see below), whose sum is σ = 5196693600. Its totient is φ = 577410240.

The previous prime is 1905454003. The next prime is 1905454073. The reversal of 1905454056 is 6504545091.

It is a super-2 number, since 2×1905454056² = 7261510319053702272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3608551 + ... + 3609078.

It is an arithmetic number, because the mean of its divisors is an integer number (162396675).

Almost surely, 2^1905454056 is an apocalyptic number.

It is an amenable number.

1905454056 is an abundant number, since it is smaller than the sum of its proper divisors (3291239544).

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

1905454056 is a wasteful number, since it uses less digits than its factorization.

1905454056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217649 (or 7217645 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1905454056 is about 43651.5069155694. The cubic root of 1905454056 is about 1239.7463182054.

The spelling of 1905454056 in words is "one billion, nine hundred five million, four hundred fifty-four thousand, fifty-six".