1818473011 has 4 divisors (see below), whose sum is σ = 1818567072. Its totient is φ = 1818378952.

The previous prime is 1818472987. The next prime is 1818473021. The reversal of 1818473011 is 1103748181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1103748181 = 12791 ⋅86291.

It is a cyclic number.

It is not a de Polignac number, because 1818473011 - 2⁷ = 1818472883 is a prime.

It is a super-2 number, since 2×1818473011² = 6613688183470812242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818473021) 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, 6235 + ... + 60628.

It is an arithmetic number, because the mean of its divisors is an integer number (454641768).

Almost surely, 2^1818473011 is an apocalyptic number.

1818473011 is a deficient number, since it is larger than the sum of its proper divisors (94061).

1818473011 is an equidigital number, since it uses as much as digits as its factorization.

1818473011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94060.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 1818473011 is about 42643.5576728772. The cubic root of 1818473011 is about 1220.5875990100.

The spelling of 1818473011 in words is "one billion, eight hundred eighteen million, four hundred seventy-three thousand, eleven".