18958057 has 4 divisors (see below), whose sum is σ = 19279440. Its totient is φ = 18636676.

The previous prime is 18958021. The next prime is 18958073. The reversal of 18958057 is 75085981.

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.

It is a cyclic number.

It is not a de Polignac number, because 18958057 - 2⁷ = 18957929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18958957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160603 + ... + 160720.

It is an arithmetic number, because the mean of its divisors is an integer number (4819860).

Almost surely, 2^18958057 is an apocalyptic number.

It is an amenable number.

18958057 is a deficient number, since it is larger than the sum of its proper divisors (321383).

18958057 is an equidigital number, since it uses as much as digits as its factorization.

18958057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321382.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 18958057 is about 4354.0850933348. The cubic root of 18958057 is about 266.6436679818.

The spelling of 18958057 in words is "eighteen million, nine hundred fifty-eight thousand, fifty-seven".