545019919 has 2 divisors, whose sum is σ = 545019920. Its totient is φ = 545019918.

The previous prime is 545019907. The next prime is 545019931. The reversal of 545019919 is 919910545.

It is a balanced prime because it is at equal distance from previous prime (545019907) and next prime (545019931).

It is a cyclic number.

It is not a de Polignac number, because 545019919 - 2⁵ = 545019887 is a prime.

It is a super-2 number, since 2×545019919² = 594093424213533122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545019989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272509959 + 272509960.

It is an arithmetic number, because the mean of its divisors is an integer number (272509960).

Almost surely, 2^545019919 is an apocalyptic number.

545019919 is a deficient number, since it is larger than the sum of its proper divisors (1).

545019919 is an equidigital number, since it uses as much as digits as its factorization.

545019919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 545019919 is about 23345.6616740670. The cubic root of 545019919 is about 816.8408682578.

The spelling of 545019919 in words is "five hundred forty-five million, nineteen thousand, nine hundred nineteen".