1398232545 has 32 divisors (see below), whose sum is σ = 2286817920. Its totient is φ = 729315840.

The previous prime is 1398232531. The next prime is 1398232597. The reversal of 1398232545 is 5452328931.

It is not a de Polignac number, because 1398232545 - 2⁵ = 1398232513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398232497 and 1398232506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159517 + ... + 168053.

It is an arithmetic number, because the mean of its divisors is an integer number (71463060).

Almost surely, 2^1398232545 is an apocalyptic number.

1398232545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1398232545 is a deficient number, since it is larger than the sum of its proper divisors (888585375).

1398232545 is a wasteful number, since it uses less digits than its factorization.

1398232545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785.

The product of its digits is 259200, while the sum is 42.

The square root of 1398232545 is about 37392.9477976797. The cubic root of 1398232545 is about 1118.2179742213.

The spelling of 1398232545 in words is "one billion, three hundred ninety-eight million, two hundred thirty-two thousand, five hundred forty-five".