1816472073 has 8 divisors (see below), whose sum is σ = 2608267648. Its totient is φ = 1117828944.

The previous prime is 1816472071. The next prime is 1816472107. The reversal of 1816472073 is 3702746181.

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

It is not a de Polignac number, because 1816472073 - 2¹ = 1816472071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 46576207 = 1816472073 / (1 + 8 + 1 + 6 + 4 + 7 + 2 + 0 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1816472071) 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, 23288065 + ... + 23288142.

It is an arithmetic number, because the mean of its divisors is an integer number (326033456).

Almost surely, 2^1816472073 is an apocalyptic number.

1816472073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1816472073 is a deficient number, since it is larger than the sum of its proper divisors (791795575).

1816472073 is a wasteful number, since it uses less digits than its factorization.

1816472073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46576223.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 1816472073 is about 42620.0900163292. The cubic root of 1816472073 is about 1220.1397477201.

The spelling of 1816472073 in words is "one billion, eight hundred sixteen million, four hundred seventy-two thousand, seventy-three".