1416331645 has 4 divisors (see below), whose sum is σ = 1699597980. Its totient is φ = 1133065312.

The previous prime is 1416331607. The next prime is 1416331661. The reversal of 1416331645 is 5461336141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5461336141 = 173 ⋅31568417.

It can be written as a sum of positive squares in 2 ways, for example, as 514110276 + 902221369 = 22674^2 + 30037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1416331645 - 2¹³ = 1416323453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1416331645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141633160 + ... + 141633169.

It is an arithmetic number, because the mean of its divisors is an integer number (424899495).

Almost surely, 2^1416331645 is an apocalyptic number.

It is an amenable number.

1416331645 is a deficient number, since it is larger than the sum of its proper divisors (283266335).

1416331645 is an equidigital number, since it uses as much as digits as its factorization.

1416331645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283266334.

The product of its digits is 25920, while the sum is 34.

The square root of 1416331645 is about 37634.1818696780. The cubic root of 1416331645 is about 1123.0221432140.

Adding to 1416331645 its reverse (5461336141), we get a palindrome (6877667786).

The spelling of 1416331645 in words is "one billion, four hundred sixteen million, three hundred thirty-one thousand, six hundred forty-five".