78018001 has 8 divisors (see below), whose sum is σ = 82791360. Its totient is φ = 73359792.

The previous prime is 78017999. The next prime is 78018007. The reversal of 78018001 is 10081087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78018001 - 2¹ = 78017999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78018007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27390 + ... + 30103.

It is an arithmetic number, because the mean of its divisors is an integer number (10348920).

Almost surely, 2^78018001 is an apocalyptic number.

It is an amenable number.

78018001 is a deficient number, since it is larger than the sum of its proper divisors (4773359).

78018001 is a wasteful number, since it uses less digits than its factorization.

78018001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57575.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 78018001 is about 8832.7799134814. The cubic root of 78018001 is about 427.2987340728.

Adding to 78018001 its reverse (10081087), we get a palindrome (88099088).

It can be divided in two parts, 780 and 18001, that added together give a palindrome (18781).

The spelling of 78018001 in words is "seventy-eight million, eighteen thousand, one".