80143918 has 4 divisors (see below), whose sum is σ = 120215880. Its totient is φ = 40071958.

The previous prime is 80143913. The next prime is 80143927. The reversal of 80143918 is 81934108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80143913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035978 + ... + 20035981.

It is an arithmetic number, because the mean of its divisors is an integer number (30053970).

Almost surely, 2^80143918 is an apocalyptic number.

80143918 is a deficient number, since it is larger than the sum of its proper divisors (40071962).

80143918 is a wasteful number, since it uses less digits than its factorization.

80143918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40071961.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 80143918 is about 8952.3135557240. The cubic root of 80143918 is about 431.1451681615.

The spelling of 80143918 in words is "eighty million, one hundred forty-three thousand, nine hundred eighteen".