1051076891 has 4 divisors (see below), whose sum is σ = 1063740552. Its totient is φ = 1038413232.

The previous prime is 1051076879. The next prime is 1051076893. The reversal of 1051076891 is 1986701501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1051076891 - 2¹⁸ = 1050814747 is a prime.

It is a super-2 number, since 2×1051076891² = 2209525261588451762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051076893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6331706 + ... + 6331871.

It is an arithmetic number, because the mean of its divisors is an integer number (265935138).

Almost surely, 2^1051076891 is an apocalyptic number.

1051076891 is a deficient number, since it is larger than the sum of its proper divisors (12663661).

1051076891 is an equidigital number, since it uses as much as digits as its factorization.

1051076891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12663660.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 1051076891 is about 32420.3160225190. The cubic root of 1051076891 is about 1016.7437136748.

The spelling of 1051076891 in words is "one billion, fifty-one million, seventy-six thousand, eight hundred ninety-one".