91370198 has 16 divisors (see below), whose sum is σ = 140403456. Its totient is φ = 44578560.

The previous prime is 91370197. The next prime is 91370243. The reversal of 91370198 is 89107319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91370197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17990 + ... + 22502.

It is an arithmetic number, because the mean of its divisors is an integer number (8775216).

Almost surely, 2^91370198 is an apocalyptic number.

91370198 is a deficient number, since it is larger than the sum of its proper divisors (49033258).

91370198 is a wasteful number, since it uses less digits than its factorization.

91370198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 91370198 is about 9558.7759676645. The cubic root of 91370198 is about 450.4032566304.

The spelling of 91370198 in words is "ninety-one million, three hundred seventy thousand, one hundred ninety-eight".