19020001 has 16 divisors (see below), whose sum is σ = 25538688. Its totient is φ = 13680000.

The previous prime is 19019953. The next prime is 19020037. The reversal of 19020001 is 10002091.

It is a cyclic number.

It is not a de Polignac number, because 19020001 - 2⁹ = 19019489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (19020041) 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, 8500 + ... + 10501.

It is an arithmetic number, because the mean of its divisors is an integer number (1596168).

Almost surely, 2^19020001 is an apocalyptic number.

19020001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19020001 is a deficient number, since it is larger than the sum of its proper divisors (6518687).

19020001 is a wasteful number, since it uses less digits than its factorization.

19020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19032.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 19020001 is about 4361.1926121188. The cubic root of 19020001 is about 266.9337648456.

Adding to 19020001 its reverse (10002091), we get a palindrome (29022092).

The spelling of 19020001 in words is "nineteen million, twenty thousand, one".