106491538 has 8 divisors (see below), whose sum is σ = 165245580. Its totient is φ = 51409680.

The previous prime is 106491527. The next prime is 106491557. The reversal of 106491538 is 835194601.

It can be written as a sum of positive squares in 2 ways, for example, as 90307009 + 16184529 = 9503^2 + 4023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×106491538² = 22680895331210888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106491497 and 106491506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917973 + ... + 918088.

Almost surely, 2^106491538 is an apocalyptic number.

106491538 is a deficient number, since it is larger than the sum of its proper divisors (58754042).

106491538 is a wasteful number, since it uses less digits than its factorization.

106491538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836092.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 106491538 is about 10319.4737268913. The cubic root of 106491538 is about 473.9927509321.

The spelling of 106491538 in words is "one hundred six million, four hundred ninety-one thousand, five hundred thirty-eight".