1618461 has 40 divisors (see below), whose sum is σ = 2744280. Its totient is φ = 943488.

The previous prime is 1618459. The next prime is 1618471. The reversal of 1618461 is 1648161.

1618461 is a `hidden beast` number, since 1 + 618 + 46 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 164025 + 1454436 = 405^2 + 1206^2 .

It is not a de Polignac number, because 1618461 - 2¹ = 1618459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618411) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30511 + ... + 30563.

It is an arithmetic number, because the mean of its divisors is an integer number (68607).

2^1618461 is an apocalyptic number.

It is an amenable number.

1618461 is a deficient number, since it is larger than the sum of its proper divisors (1125819).

1618461 is a wasteful number, since it uses less digits than its factorization.

1618461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 98 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1618461 is about 1272.1874861828. The cubic root of 1618461 is about 117.4088262090.

The spelling of 1618461 in words is "one million, six hundred eighteen thousand, four hundred sixty-one".