1398852165 has 16 divisors (see below), whose sum is σ = 2250533376. Its totient is φ = 741931200.

The previous prime is 1398852163. The next prime is 1398852193. The reversal of 1398852165 is 5612588931.

It is a happy number.

It is not a de Polignac number, because 1398852165 - 2¹ = 1398852163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398852163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254901 + ... + 260330.

It is an arithmetic number, because the mean of its divisors is an integer number (140658336).

Almost surely, 2^1398852165 is an apocalyptic number.

1398852165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1398852165 is a deficient number, since it is larger than the sum of its proper divisors (851681211).

1398852165 is a wasteful number, since it uses less digits than its factorization.

1398852165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515420.

The product of its digits is 518400, while the sum is 48.

The square root of 1398852165 is about 37401.2321321103. The cubic root of 1398852165 is about 1118.3831274598.

The spelling of 1398852165 in words is "one billion, three hundred ninety-eight million, eight hundred fifty-two thousand, one hundred sixty-five".