1385449170 has 64 divisors (see below), whose sum is σ = 4023634176. Its totient is φ = 298045440.

The previous prime is 1385449159. The next prime is 1385449171. The reversal of 1385449170 is 719445831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1385449171) 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 31 ways as a sum of consecutive naturals, for example, 190471 + ... + 197610.

It is an arithmetic number, because the mean of its divisors is an integer number (62869284).

Almost surely, 2^1385449170 is an apocalyptic number.

1385449170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1385449170 is an abundant number, since it is smaller than the sum of its proper divisors (2638185006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385449170 is a wasteful number, since it uses less digits than its factorization.

1385449170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388115.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1385449170 is about 37221.6223450832. The cubic root of 1385449170 is about 1114.7997575884.

The spelling of 1385449170 in words is "one billion, three hundred eighty-five million, four hundred forty-nine thousand, one hundred seventy".