105638378 has 4 divisors (see below), whose sum is σ = 158457570. Its totient is φ = 52819188.

The previous prime is 105638363. The next prime is 105638399. The reversal of 105638378 is 873836501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873836501 = 1171 ⋅746231.

It can be written as a sum of positive squares in only one way, i.e., 58262689 + 47375689 = 7633^2 + 6883^2 .

It is a super-2 number, since 2×105638378² = 22318933812941768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26409593 + ... + 26409596.

Almost surely, 2^105638378 is an apocalyptic number.

105638378 is a deficient number, since it is larger than the sum of its proper divisors (52819192).

105638378 is an equidigital number, since it uses as much as digits as its factorization.

105638378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52819191.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 105638378 is about 10278.0532203331. The cubic root of 105638378 is about 472.7235533126.

The spelling of 105638378 in words is "one hundred five million, six hundred thirty-eight thousand, three hundred seventy-eight".