1813387354 has 4 divisors (see below), whose sum is σ = 2720081034. Its totient is φ = 906693676.

The previous prime is 1813387343. The next prime is 1813387391. The reversal of 1813387354 is 4537833181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4537833181 = 7 ⋅648261883.

It can be written as a sum of positive squares in only one way, i.e., 1561435225 + 251952129 = 39515^2 + 15873^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1813387354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453346837 + ... + 453346840.

Almost surely, 2^1813387354 is an apocalyptic number.

1813387354 is a deficient number, since it is larger than the sum of its proper divisors (906693680).

1813387354 is an equidigital number, since it uses as much as digits as its factorization.

1813387354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906693679.

The product of its digits is 241920, while the sum is 43.

The square root of 1813387354 is about 42583.8860838228. The cubic root of 1813387354 is about 1219.4486790498.

The spelling of 1813387354 in words is "one billion, eight hundred thirteen million, three hundred eighty-seven thousand, three hundred fifty-four".