1056145819 has 2 divisors, whose sum is σ = 1056145820. Its totient is φ = 1056145818.

The previous prime is 1056145817. The next prime is 1056145841. The reversal of 1056145819 is 9185416501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1056145819 - 2¹ = 1056145817 is a prime.

It is a super-2 number, since 2×1056145819² = 2230887981982361522, which contains 22 as substring.

Together with 1056145817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1056145817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528072909 + 528072910.

It is an arithmetic number, because the mean of its divisors is an integer number (528072910).

Almost surely, 2^1056145819 is an apocalyptic number.

1056145819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056145819 is an equidigital number, since it uses as much as digits as its factorization.

1056145819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 1056145819 is about 32498.3971758608. The cubic root of 1056145819 is about 1018.3755441448.

The spelling of 1056145819 in words is "one billion, fifty-six million, one hundred forty-five thousand, eight hundred nineteen".