18958001 has 4 divisors (see below), whose sum is σ = 18997104. Its totient is φ = 18918900.

The previous prime is 18957997. The next prime is 18958013. The reversal of 18958001 is 10085981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10085981 = 17 ⋅593293.

It is a cyclic number.

It is not a de Polignac number, because 18958001 - 2² = 18957997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18958021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18815 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (4749276).

Almost surely, 2^18958001 is an apocalyptic number.

It is an amenable number.

18958001 is a deficient number, since it is larger than the sum of its proper divisors (39103).

18958001 is an equidigital number, since it uses as much as digits as its factorization.

18958001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39102.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 18958001 is about 4354.0786625875. The cubic root of 18958001 is about 266.6434054363.

The spelling of 18958001 in words is "eighteen million, nine hundred fifty-eight thousand, one".