97857019 has 16 divisors (see below), whose sum is σ = 110440512. Its totient is φ = 86030208.

The previous prime is 97857017. The next prime is 97857029. The reversal of 97857019 is 91075879.

It is a cyclic number.

It is not a de Polignac number, because 97857019 - 2¹ = 97857017 is a prime.

It is a super-2 number, since 2×97857019² = 19151992335132722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97857019.

It is not an unprimeable number, because it can be changed into a prime (97857017) 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, 87049 + ... + 88165.

It is an arithmetic number, because the mean of its divisors is an integer number (6902532).

Almost surely, 2^97857019 is an apocalyptic number.

97857019 is a deficient number, since it is larger than the sum of its proper divisors (12583493).

97857019 is a wasteful number, since it uses less digits than its factorization.

97857019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 97857019 is about 9892.2706695682. The cubic root of 97857019 is about 460.8193007560.

The spelling of 97857019 in words is "ninety-seven million, eight hundred fifty-seven thousand, nineteen".