190286545 has 16 divisors (see below), whose sum is σ = 239466960. Its totient is φ = 144958464.

The previous prime is 190286543. The next prime is 190286557. The reversal of 190286545 is 545682091.

It can be written as a sum of positive squares in 8 ways, for example, as 94864 + 190191681 = 308^2 + 13791^2 .

It is a cyclic number.

It is not a de Polignac number, because 190286545 - 2¹ = 190286543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190286498 and 190286507.

It is not an unprimeable number, because it can be changed into a prime (190286543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 19573.

It is an arithmetic number, because the mean of its divisors is an integer number (14966685).

Almost surely, 2^190286545 is an apocalyptic number.

It is an amenable number.

190286545 is a deficient number, since it is larger than the sum of its proper divisors (49180415).

190286545 is a wasteful number, since it uses less digits than its factorization.

190286545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18084.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 190286545 is about 13794.4389157370. The cubic root of 190286545 is about 575.1785658388.

The spelling of 190286545 in words is "one hundred ninety million, two hundred eighty-six thousand, five hundred forty-five".