1366622090 has 8 divisors (see below), whose sum is σ = 2459919780. Its totient is φ = 546648832.

The previous prime is 1366622057. The next prime is 1366622093. The reversal of 1366622090 is 902266631.

It can be written as a sum of positive squares in 2 ways, for example, as 1366559089 + 63001 = 36967^2 + 251^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366622090.

It is not an unprimeable number, because it can be changed into a prime (1366622093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68331095 + ... + 68331114.

Almost surely, 2^1366622090 is an apocalyptic number.

1366622090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366622090 is a deficient number, since it is larger than the sum of its proper divisors (1093297690).

1366622090 is a wasteful number, since it uses less digits than its factorization.

1366622090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136662216.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1366622090 is about 36967.8521150472. The cubic root of 1366622090 is about 1109.7269815235.

The spelling of 1366622090 in words is "one billion, three hundred sixty-six million, six hundred twenty-two thousand, ninety".