185213465 has 8 divisors (see below), whose sum is σ = 222472008. Its totient is φ = 148026880.

The previous prime is 185213443. The next prime is 185213471. The reversal of 185213465 is 564312581.

It can be written as a sum of positive squares in 4 ways, for example, as 27258841 + 157954624 = 5221^2 + 12568^2 .

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

It is not a de Polignac number, because 185213465 - 2¹⁰ = 185212441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12152 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (27809001).

Almost surely, 2^185213465 is an apocalyptic number.

It is an amenable number.

185213465 is a deficient number, since it is larger than the sum of its proper divisors (37258543).

185213465 is a wasteful number, since it uses less digits than its factorization.

185213465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35979.

The product of its digits is 28800, while the sum is 35.

The square root of 185213465 is about 13609.3153758740. The cubic root of 185213465 is about 570.0209954306.

The spelling of 185213465 in words is "one hundred eighty-five million, two hundred thirteen thousand, four hundred sixty-five".