1366914421 has 8 divisors (see below), whose sum is σ = 1419635160. Its totient is φ = 1315024128.

The previous prime is 1366914389. The next prime is 1366914433. The reversal of 1366914421 is 1244196631.

It can be written as a sum of positive squares in 4 ways, for example, as 727380900 + 639533521 = 26970^2 + 25289^2 .

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

It is not a de Polignac number, because 1366914421 - 2⁵ = 1366914389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366914721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204256 + ... + 210841.

It is an arithmetic number, because the mean of its divisors is an integer number (177454395).

Almost surely, 2^1366914421 is an apocalyptic number.

It is an amenable number.

1366914421 is a deficient number, since it is larger than the sum of its proper divisors (52720739).

1366914421 is an equidigital number, since it uses as much as digits as its factorization.

1366914421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415223.

The product of its digits is 31104, while the sum is 37.

The square root of 1366914421 is about 36971.8057579015. The cubic root of 1366914421 is about 1109.8061022675.

The spelling of 1366914421 in words is "one billion, three hundred sixty-six million, nine hundred fourteen thousand, four hundred twenty-one".