1361618 has 4 divisors (see below), whose sum is σ = 2042430. Its totient is φ = 680808.

The previous prime is 1361609. The next prime is 1361629. The reversal of 1361618 is 8161631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1261129 + 100489 = 1123^2 + 317^2 .

It is a super-3 number, since 3×1361618³ = 7573333931297163096, which contains 333 as substring.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340403 + ... + 340406.

2^1361618 is an apocalyptic number.

1361618 is a deficient number, since it is larger than the sum of its proper divisors (680812).

1361618 is an equidigital number, since it uses as much as digits as its factorization.

1361618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680811.

The product of its digits is 864, while the sum is 26.

The square root of 1361618 is about 1166.8838845404. The cubic root of 1361618 is about 110.8370848160.

The spelling of 1361618 in words is "one million, three hundred sixty-one thousand, six hundred eighteen".