19201641 has 16 divisors (see below), whose sum is σ = 26182848. Its totient is φ = 12513600.

The previous prime is 19201621. The next prime is 19201643. The reversal of 19201641 is 14610291.

It is not a de Polignac number, because 19201641 - 2⁹ = 19201129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19201643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57846 + ... + 58176.

It is an arithmetic number, because the mean of its divisors is an integer number (1636428).

Almost surely, 2^19201641 is an apocalyptic number.

It is an amenable number.

19201641 is a deficient number, since it is larger than the sum of its proper divisors (6981207).

19201641 is a wasteful number, since it uses less digits than its factorization.

19201641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 19201641 is about 4381.9677086898. The cubic root of 19201641 is about 267.7808085619.

The spelling of 19201641 in words is "nineteen million, two hundred one thousand, six hundred forty-one".