1384471890 has 96 divisors (see below), whose sum is σ = 3885822720. Its totient is φ = 340948608.

The previous prime is 1384471889. The next prime is 1384471981. The reversal of 1384471890 is 981744831.

It is a happy number.

1384471890 is a `hidden beast` number, since 13 + 84 + 471 + 8 + 90 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48499 + ... + 71561.

It is an arithmetic number, because the mean of its divisors is an integer number (40477320).

Almost surely, 2^1384471890 is an apocalyptic number.

1384471890 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 1384471890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1942911360).

1384471890 is an abundant number, since it is smaller than the sum of its proper divisors (2501350830).

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

1384471890 is a wasteful number, since it uses less digits than its factorization.

1384471890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23128 (or 23125 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1384471890 is about 37208.4921758461. The cubic root of 1384471890 is about 1114.5375735983.

The spelling of 1384471890 in words is "one billion, three hundred eighty-four million, four hundred seventy-one thousand, eight hundred ninety".