540890186 has 8 divisors (see below), whose sum is σ = 812743140. Its totient is φ = 269975808.

The previous prime is 540890171. The next prime is 540890219. The reversal of 540890186 is 681098045.

It can be written as a sum of positive squares in 2 ways, for example, as 366148225 + 174741961 = 19135^2 + 13219^2 .

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

It is a super-2 number, since 2×540890186² = 585124386622229192, which contains 22 as substring.

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, 233201 + ... + 235508.

Almost surely, 2^540890186 is an apocalyptic number.

540890186 is a deficient number, since it is larger than the sum of its proper divisors (271852954).

540890186 is a wasteful number, since it uses less digits than its factorization.

540890186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469288.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 540890186 is about 23257.0459431115. The cubic root of 540890186 is about 814.7725090533.

The spelling of 540890186 in words is "five hundred forty million, eight hundred ninety thousand, one hundred eighty-six".