186089949 has 6 divisors (see below), whose sum is σ = 268796606. Its totient is φ = 124059960.

The previous prime is 186089929. The next prime is 186089989. The reversal of 186089949 is 949980681.

It can be written as a sum of positive squares in only one way, i.e., 159896025 + 26193924 = 12645^2 + 5118^2 .

It is not a de Polignac number, because 186089949 - 2¹⁵ = 186057181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 186089895 and 186089904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186089929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10338322 + ... + 10338339.

Almost surely, 2^186089949 is an apocalyptic number.

It is an amenable number.

186089949 is a deficient number, since it is larger than the sum of its proper divisors (82706657).

186089949 is a wasteful number, since it uses less digits than its factorization.

186089949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20676667 (or 20676664 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 186089949 is about 13641.4789887314. The cubic root of 186089949 is about 570.9187491674.

It can be divided in two parts, 1860 and 89949, that added together give a square (91809 = 303²).

The spelling of 186089949 in words is "one hundred eighty-six million, eighty-nine thousand, nine hundred forty-nine".