1918313337 has 16 divisors (see below), whose sum is σ = 2718220032. Its totient is φ = 1199197440.

The previous prime is 1918313329. The next prime is 1918313339. The reversal of 1918313337 is 7333138191.

It is not a de Polignac number, because 1918313337 - 2³ = 1918313329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1918313295 and 1918313304.

It is not an unprimeable number, because it can be changed into a prime (1918313339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55578 + ... + 83219.

It is an arithmetic number, because the mean of its divisors is an integer number (169888752).

Almost surely, 2^1918313337 is an apocalyptic number.

1918313337 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1918313337 is a deficient number, since it is larger than the sum of its proper divisors (799906695).

1918313337 is a wasteful number, since it uses less digits than its factorization.

1918313337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139088.

The product of its digits is 40824, while the sum is 39.

The square root of 1918313337 is about 43798.5540514753. The cubic root of 1918313337 is about 1242.5289475555.

The spelling of 1918313337 in words is "one billion, nine hundred eighteen million, three hundred thirteen thousand, three hundred thirty-seven".