45219019 has 2 divisors, whose sum is σ = 45219020. Its totient is φ = 45219018.

The previous prime is 45219011. The next prime is 45219043. The reversal of 45219019 is 91091254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45219019 - 2³ = 45219011 is a prime.

It is a super-2 number, since 2×45219019² = 4089519358644722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45219011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609509 + 22609510.

It is an arithmetic number, because the mean of its divisors is an integer number (22609510).

Almost surely, 2^45219019 is an apocalyptic number.

45219019 is a deficient number, since it is larger than the sum of its proper divisors (1).

45219019 is an equidigital number, since it uses as much as digits as its factorization.

45219019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 45219019 is about 6724.5088296470. The cubic root of 45219019 is about 356.2654539721.

The spelling of 45219019 in words is "forty-five million, two hundred nineteen thousand, nineteen".