79545019 has 2 divisors, whose sum is σ = 79545020. Its totient is φ = 79545018.

The previous prime is 79545007. The next prime is 79545029. The reversal of 79545019 is 91054597.

It is a strong prime.

It is an emirp because it is prime and its reverse (91054597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79545019 - 2⁵ = 79544987 is a prime.

It is a super-2 number, since 2×79545019² = 12654820095420722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79545029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39772509 + 39772510.

It is an arithmetic number, because the mean of its divisors is an integer number (39772510).

Almost surely, 2^79545019 is an apocalyptic number.

79545019 is a deficient number, since it is larger than the sum of its proper divisors (1).

79545019 is an equidigital number, since it uses as much as digits as its factorization.

79545019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 79545019 is about 8918.8014329281. The cubic root of 79545019 is about 430.0685288292.

The spelling of 79545019 in words is "seventy-nine million, five hundred forty-five thousand, nineteen".