1798523945 has 16 divisors (see below), whose sum is σ = 2293064640. Its totient is φ = 1350345024.

The previous prime is 1798523941. The next prime is 1798523953. The reversal of 1798523945 is 5493258971.

It is a cyclic number.

It is not a de Polignac number, because 1798523945 - 2² = 1798523941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1798523941) 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, 78302 + ... + 98631.

It is an arithmetic number, because the mean of its divisors is an integer number (143316540).

Almost surely, 2^1798523945 is an apocalyptic number.

It is an amenable number.

1798523945 is a deficient number, since it is larger than the sum of its proper divisors (494540695).

1798523945 is a wasteful number, since it uses less digits than its factorization.

1798523945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177064.

The product of its digits is 2721600, while the sum is 53.

The square root of 1798523945 is about 42409.0078285262. The cubic root of 1798523945 is about 1216.1078020861.

The spelling of 1798523945 in words is "one billion, seven hundred ninety-eight million, five hundred twenty-three thousand, nine hundred forty-five".