105640194 has 32 divisors (see below), whose sum is σ = 230978304. Its totient is φ = 31944080.

The previous prime is 105640189. The next prime is 105640211. The reversal of 105640194 is 491046501.

It is a happy number.

It is a super-2 number, since 2×105640194² = 22319701176715272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35737 + ... + 38579.

It is an arithmetic number, because the mean of its divisors is an integer number (7218072).

Almost surely, 2^105640194 is an apocalyptic number.

105640194 is an abundant number, since it is smaller than the sum of its proper divisors (125338110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105640194 is a wasteful number, since it uses less digits than its factorization.

105640194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 105640194 is about 10278.1415635318. The cubic root of 105640194 is about 472.7262621168.

Adding to 105640194 its reverse (491046501), we get a palindrome (596686695).

The spelling of 105640194 in words is "one hundred five million, six hundred forty thousand, one hundred ninety-four".