1802338453 has 4 divisors (see below), whose sum is σ = 1908358380. Its totient is φ = 1696318528.

The previous prime is 1802338411. The next prime is 1802338463. The reversal of 1802338453 is 3548332081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3548332081 = 7 ⋅506904583.

It can be written as a sum of positive squares in 2 ways, for example, as 1207076049 + 595262404 = 34743^2 + 24398^2 .

It is a cyclic number.

It is not a de Polignac number, because 1802338453 - 2¹³ = 1802330261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802338403) 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, 53009938 + ... + 53009971.

It is an arithmetic number, because the mean of its divisors is an integer number (477089595).

Almost surely, 2^1802338453 is an apocalyptic number.

It is an amenable number.

1802338453 is a deficient number, since it is larger than the sum of its proper divisors (106019927).

1802338453 is a wasteful number, since it uses less digits than its factorization.

1802338453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106019926.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1802338453 is about 42453.9568591668. The cubic root of 1802338453 is about 1216.9669468459.

The spelling of 1802338453 in words is "one billion, eight hundred two million, three hundred thirty-eight thousand, four hundred fifty-three".