97812019 has 16 divisors (see below), whose sum is σ = 106112160. Its totient is φ = 89856000.

The previous prime is 97812007. The next prime is 97812023. The reversal of 97812019 is 91021879.

It is a cyclic number.

It is not a de Polignac number, because 97812019 - 2¹⁹ = 97287731 is a prime.

It is a super-3 number, since 3×97812019³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97812049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187479 + ... + 187999.

It is an arithmetic number, because the mean of its divisors is an integer number (6632010).

Almost surely, 2^97812019 is an apocalyptic number.

97812019 is a deficient number, since it is larger than the sum of its proper divisors (8300141).

97812019 is a wasteful number, since it uses less digits than its factorization.

97812019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 97812019 is about 9889.9959049537. The cubic root of 97812019 is about 460.7486533011.

The spelling of 97812019 in words is "ninety-seven million, eight hundred twelve thousand, nineteen".