1045556419 has 2 divisors, whose sum is σ = 1045556420. Its totient is φ = 1045556418.

The previous prime is 1045556417. The next prime is 1045556429. The reversal of 1045556419 is 9146555401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1045556419 - 2¹ = 1045556417 is a prime.

It is a super-2 number, since 2×1045556419² = 2186376450624207122, which contains 22 as substring.

Together with 1045556417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1045556411) 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 as a sum of consecutive naturals, namely, 522778209 + 522778210.

It is an arithmetic number, because the mean of its divisors is an integer number (522778210).

Almost surely, 2^1045556419 is an apocalyptic number.

1045556419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045556419 is an equidigital number, since it uses as much as digits as its factorization.

1045556419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1045556419 is about 32335.0648522622. The cubic root of 1045556419 is about 1014.9605391245.

The spelling of 1045556419 in words is "one billion, forty-five million, five hundred fifty-six thousand, four hundred nineteen".