2181543098 has 16 divisors (see below), whose sum is σ = 3860427264. Its totient is φ = 904787280.

The previous prime is 2181543097. The next prime is 2181543107. The reversal of 2181543098 is 8903451812.

It is not an unprimeable number, because it can be changed into a prime (2181543097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512865 + ... + 2513732.

It is an arithmetic number, because the mean of its divisors is an integer number (241276704).

Almost surely, 2^2181543098 is an apocalyptic number.

2181543098 is a deficient number, since it is larger than the sum of its proper divisors (1678884166).

2181543098 is a wasteful number, since it uses less digits than its factorization.

2181543098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026637.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2181543098 is about 46706.9919605191. The cubic root of 2181543098 is about 1296.9441236398.

The spelling of 2181543098 in words is "two billion, one hundred eighty-one million, five hundred forty-three thousand, ninety-eight".