91818344 has 8 divisors (see below), whose sum is σ = 172159410. Its totient is φ = 45909168.

The previous prime is 91818329. The next prime is 91818371. The reversal of 91818344 is 44381819.

It can be written as a sum of positive squares in only one way, i.e., 89680900 + 2137444 = 9470^2 + 1462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 91818298 and 91818307.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5738639 + ... + 5738654.

Almost surely, 2^91818344 is an apocalyptic number.

It is an amenable number.

91818344 is a deficient number, since it is larger than the sum of its proper divisors (80341066).

91818344 is a wasteful number, since it uses less digits than its factorization.

91818344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11477299 (or 11477295 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 91818344 is about 9582.1888939845. The cubic root of 91818344 is about 451.1384245440.

The spelling of 91818344 in words is "ninety-one million, eight hundred eighteen thousand, three hundred forty-four".