1898492545 has 16 divisors (see below), whose sum is σ = 2362867200. Its totient is φ = 1462809600.

The previous prime is 1898492539. The next prime is 1898492549. The reversal of 1898492545 is 5452948981.

It is not a de Polignac number, because 1898492545 - 2²³ = 1890103937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1898492549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3681 + ... + 61729.

It is an arithmetic number, because the mean of its divisors is an integer number (147679200).

Almost surely, 2^1898492545 is an apocalyptic number.

It is an amenable number.

1898492545 is a deficient number, since it is larger than the sum of its proper divisors (464374655).

1898492545 is a wasteful number, since it uses less digits than its factorization.

1898492545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58296.

The product of its digits is 4147200, while the sum is 55.

The square root of 1898492545 is about 43571.6943094941. The cubic root of 1898492545 is about 1238.2346855999.

The spelling of 1898492545 in words is "one billion, eight hundred ninety-eight million, four hundred ninety-two thousand, five hundred forty-five".