91862160898 has 4 divisors (see below), whose sum is σ = 137793241350. Its totient is φ = 45931080448.

The previous prime is 91862160893. The next prime is 91862160899. The reversal of 91862160898 is 89806126819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89806126819 = 53 ⋅1694455223.

It can be written as a sum of positive squares in only one way, i.e., 91280724129 + 581436769 = 302127^2 + 24113^2 .

It is not an unprimeable number, because it can be changed into a prime (91862160893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22965540223 + ... + 22965540226.

Almost surely, 2^91862160898 is an apocalyptic number.

91862160898 is a deficient number, since it is larger than the sum of its proper divisors (45931080452).

91862160898 is a wasteful number, since it uses less digits than its factorization.

91862160898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45931080451.

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 91862160898 in words is "ninety-one billion, eight hundred sixty-two million, one hundred sixty thousand, eight hundred ninety-eight".