1054891921 has 8 divisors (see below), whose sum is σ = 1067572224. Its totient is φ = 1042264080.

The previous prime is 1054891919. The next prime is 1054891931. The reversal of 1054891921 is 1291984501.

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 1054891921 - 2¹ = 1054891919 is a prime.

It is a super-2 number, since 2×1054891921² = 2225593929982140482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1054891931) by changing a digit.

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, 28111 + ... + 53851.

It is an arithmetic number, because the mean of its divisors is an integer number (133446528).

Almost surely, 2^1054891921 is an apocalyptic number.

It is an amenable number.

1054891921 is a deficient number, since it is larger than the sum of its proper divisors (12680303).

1054891921 is a wasteful number, since it uses less digits than its factorization.

1054891921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26231.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1054891921 is about 32479.0997566127. The cubic root of 1054891921 is about 1017.9723660000.

The spelling of 1054891921 in words is "one billion, fifty-four million, eight hundred ninety-one thousand, nine hundred twenty-one".