816350193 has 6 divisors (see below), whose sum is σ = 1179172514. Its totient is φ = 544233456.

The previous prime is 816350173. The next prime is 816350207. The reversal of 816350193 is 391053618.

It is a happy number.

816350193 is a `hidden beast` number, since 8 + 1 + 63 + 501 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 814988304 + 1361889 = 28548^2 + 1167^2 .

It is not a de Polignac number, because 816350193 - 2²² = 812155889 is a prime.

It is a super-2 number, since 2×816350193² = 1332855275222274498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816350113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45352780 + ... + 45352797.

Almost surely, 2^816350193 is an apocalyptic number.

It is an amenable number.

816350193 is a deficient number, since it is larger than the sum of its proper divisors (362822321).

816350193 is a wasteful number, since it uses less digits than its factorization.

816350193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90705583 (or 90705580 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 816350193 is about 28571.8426602136. The cubic root of 816350193 is about 934.5994043969.

The spelling of 816350193 in words is "eight hundred sixteen million, three hundred fifty thousand, one hundred ninety-three".