16430641 has 2 divisors, whose sum is σ = 16430642. Its totient is φ = 16430640.

The previous prime is 16430633. The next prime is 16430681. The reversal of 16430641 is 14603461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 5308416 = 3335^2 + 2304^2 .

It is a cyclic number.

It is not a de Polignac number, because 16430641 - 2³ = 16430633 is a prime.

It is not a weakly prime, because it can be changed into another prime (16430681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8215320 + 8215321.

It is an arithmetic number, because the mean of its divisors is an integer number (8215321).

Almost surely, 2^16430641 is an apocalyptic number.

It is an amenable number.

16430641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16430641 is an equidigital number, since it uses as much as digits as its factorization.

16430641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16430641 is about 4053.4727086783. The cubic root of 16430641 is about 254.2249490041.

It can be divided in two parts, 16430 and 641, that added together give a palindrome (17071).

The spelling of 16430641 in words is "sixteen million, four hundred thirty thousand, six hundred forty-one".