1398264385 has 16 divisors (see below), whose sum is σ = 1926078336. Its totient is φ = 954580608.

The previous prime is 1398264383. The next prime is 1398264403. The reversal of 1398264385 is 5834628931.

It is a cyclic number.

It is not a de Polignac number, because 1398264385 - 2¹ = 1398264383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1398264383) 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, 80052 + ... + 95941.

It is an arithmetic number, because the mean of its divisors is an integer number (120379896).

Almost surely, 2^1398264385 is an apocalyptic number.

It is an amenable number.

1398264385 is a deficient number, since it is larger than the sum of its proper divisors (527813951).

1398264385 is a wasteful number, since it uses less digits than its factorization.

1398264385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176232.

The product of its digits is 1244160, while the sum is 49.

The square root of 1398264385 is about 37393.3735439850. The cubic root of 1398264385 is about 1118.2264620298.

The spelling of 1398264385 in words is "one billion, three hundred ninety-eight million, two hundred sixty-four thousand, three hundred eighty-five".