97871518 has 4 divisors (see below), whose sum is σ = 146807280. Its totient is φ = 48935758.

The previous prime is 97871513. The next prime is 97871537. The reversal of 97871518 is 81517879.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97871513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24467878 + ... + 24467881.

It is an arithmetic number, because the mean of its divisors is an integer number (36701820).

Almost surely, 2^97871518 is an apocalyptic number.

97871518 is a deficient number, since it is larger than the sum of its proper divisors (48935762).

97871518 is a wasteful number, since it uses less digits than its factorization.

97871518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48935761.

The product of its digits is 141120, while the sum is 46.

The square root of 97871518 is about 9893.0034873136. The cubic root of 97871518 is about 460.8420587525.

It can be divided in two parts, 97871 and 518, that added together give a palindrome (98389).

The spelling of 97871518 in words is "ninety-seven million, eight hundred seventy-one thousand, five hundred eighteen".