1384891830 has 160 divisors (see below), whose sum is σ = 4393635840. Its totient is φ = 306296640.

The previous prime is 1384891829. The next prime is 1384891831. The reversal of 1384891830 is 381984831.

1384891830 is a `hidden beast` number, since 138 + 489 + 1 + 8 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (1384891829) and next prime (1384891831).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384891831) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 171831 + ... + 179709.

It is an arithmetic number, because the mean of its divisors is an integer number (27460224).

Almost surely, 2^1384891830 is an apocalyptic number.

1384891830 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 1384891830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196817920).

1384891830 is an abundant number, since it is smaller than the sum of its proper divisors (3008744010).

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

1384891830 is a wasteful number, since it uses less digits than its factorization.

1384891830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7936 (or 7927 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1384891830 is about 37214.1348146104. The cubic root of 1384891830 is about 1114.6502499186.

The spelling of 1384891830 in words is "one billion, three hundred eighty-four million, eight hundred ninety-one thousand, eight hundred thirty".