2198903545 has 4 divisors (see below), whose sum is σ = 2638684260. Its totient is φ = 1759122832.

The previous prime is 2198903537. The next prime is 2198903549. The reversal of 2198903545 is 5453098912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1532644201 + 666259344 = 39149^2 + 25812^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198903545 - 2³ = 2198903537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2198903495 and 2198903504.

It is not an unprimeable number, because it can be changed into a prime (2198903549) 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, 219890350 + ... + 219890359.

It is an arithmetic number, because the mean of its divisors is an integer number (659671065).

Almost surely, 2^2198903545 is an apocalyptic number.

It is an amenable number.

2198903545 is a deficient number, since it is larger than the sum of its proper divisors (439780715).

2198903545 is an equidigital number, since it uses as much as digits as its factorization.

2198903545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439780714.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 2198903545 is about 46892.4678919760. The cubic root of 2198903545 is about 1300.3753442805.

The spelling of 2198903545 in words is "two billion, one hundred ninety-eight million, nine hundred three thousand, five hundred forty-five".