1384122870 has 128 divisors (see below), whose sum is σ = 3998937600. Its totient is φ = 338649984.

The previous prime is 1384122869. The next prime is 1384122877. The reversal of 1384122870 is 782214831.

It is a super-2 number, since 2×1384122870² = 3831592238514073800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384122877) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 627189 + ... + 629391.

It is an arithmetic number, because the mean of its divisors is an integer number (31241700).

Almost surely, 2^1384122870 is an apocalyptic number.

1384122870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384122870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1999468800).

1384122870 is an abundant number, since it is smaller than the sum of its proper divisors (2614814730).

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

1384122870 is a wasteful number, since it uses less digits than its factorization.

1384122870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1384122870 is about 37203.8018218569. The cubic root of 1384122870 is about 1114.4439088588.

The spelling of 1384122870 in words is "one billion, three hundred eighty-four million, one hundred twenty-two thousand, eight hundred seventy".