18962641 has 2 divisors, whose sum is σ = 18962642. Its totient is φ = 18962640.

The previous prime is 18962639. The next prime is 18962651. The reversal of 18962641 is 14626981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 291600 = 4321^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 18962641 - 2¹ = 18962639 is a prime.

Together with 18962639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18962641.

It is not a weakly prime, because it can be changed into another prime (18962651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9481320 + 9481321.

It is an arithmetic number, because the mean of its divisors is an integer number (9481321).

Almost surely, 2^18962641 is an apocalyptic number.

It is an amenable number.

18962641 is a deficient number, since it is larger than the sum of its proper divisors (1).

18962641 is an equidigital number, since it uses as much as digits as its factorization.

18962641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 18962641 is about 4354.6114637244. The cubic root of 18962641 is about 266.6651574567.

The spelling of 18962641 in words is "eighteen million, nine hundred sixty-two thousand, six hundred forty-one".