1051991456 has 12 divisors (see below), whose sum is σ = 2071108242. Its totient is φ = 525995712.

The previous prime is 1051991441. The next prime is 1051991461. The reversal of 1051991456 is 6541991501.

1051991456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 822771856 + 229219600 = 28684^2 + 15140^2 .

It is a super-2 number, since 2×1051991456² = 2213372046993999872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16437335 + ... + 16437398.

Almost surely, 2^1051991456 is an apocalyptic number.

1051991456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1051991456 is a deficient number, since it is larger than the sum of its proper divisors (1019116786).

1051991456 is an equidigital number, since it uses as much as digits as its factorization.

1051991456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32874743 (or 32874735 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1051991456 is about 32434.4177687838. The cubic root of 1051991456 is about 1017.0385251678.

The spelling of 1051991456 in words is "one billion, fifty-one million, nine hundred ninety-one thousand, four hundred fifty-six".