1051491319 has 2 divisors, whose sum is σ = 1051491320. Its totient is φ = 1051491318.

The previous prime is 1051491317. The next prime is 1051491377. The reversal of 1051491319 is 9131941501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051491319 - 2¹ = 1051491317 is a prime.

It is a super-2 number, since 2×1051491319² = 2211267987864719522, which contains 22 as substring.

Together with 1051491317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051491313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525745659 + 525745660.

It is an arithmetic number, because the mean of its divisors is an integer number (525745660).

Almost surely, 2^1051491319 is an apocalyptic number.

1051491319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051491319 is an equidigital number, since it uses as much as digits as its factorization.

1051491319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 1051491319 is about 32426.7068787443. The cubic root of 1051491319 is about 1016.8773263849.

The spelling of 1051491319 in words is "one billion, fifty-one million, four hundred ninety-one thousand, three hundred nineteen".