1918183245 has 32 divisors (see below), whose sum is σ = 3382646400. Its totient is φ = 920432640.

The previous prime is 1918183243. The next prime is 1918183271. The reversal of 1918183245 is 5423818191.

It is not a de Polignac number, because 1918183245 - 2¹ = 1918183243 is a prime.

It is a super-2 number, since 2×1918183245² = 7358853922797460050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1918183197 and 1918183206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918183243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43920 + ... + 75929.

It is an arithmetic number, because the mean of its divisors is an integer number (105707700).

Almost surely, 2^1918183245 is an apocalyptic number.

1918183245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1918183245 is a deficient number, since it is larger than the sum of its proper divisors (1464463155).

1918183245 is a wasteful number, since it uses less digits than its factorization.

1918183245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119965.

The product of its digits is 69120, while the sum is 42.

The square root of 1918183245 is about 43797.0689087752. The cubic root of 1918183245 is about 1242.5008592124.

The spelling of 1918183245 in words is "one billion, nine hundred eighteen million, one hundred eighty-three thousand, two hundred forty-five".