1365666414 has 64 divisors (see below), whose sum is σ = 3181463040. Its totient is φ = 382734720.

The previous prime is 1365666413. The next prime is 1365666431. The reversal of 1365666414 is 4146665631.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365666413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1646952 + ... + 1647780.

It is an arithmetic number, because the mean of its divisors is an integer number (49710360).

Almost surely, 2^1365666414 is an apocalyptic number.

1365666414 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1365666414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590731520).

1365666414 is an abundant number, since it is smaller than the sum of its proper divisors (1815796626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1365666414 is a wasteful number, since it uses less digits than its factorization.

1365666414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its digits is 311040, while the sum is 42.

The square root of 1365666414 is about 36954.9240832666. The cubic root of 1365666414 is about 1109.4682446086.

The spelling of 1365666414 in words is "one billion, three hundred sixty-five million, six hundred sixty-six thousand, four hundred fourteen".