1384218490 has 16 divisors (see below), whose sum is σ = 2538605448. Its totient is φ = 543240256.

The previous prime is 1384218463. The next prime is 1384218497. The reversal of 1384218490 is 948124831.

It can be written as a sum of positive squares in 4 ways, for example, as 1043483809 + 340734681 = 32303^2 + 18459^2 .

It is not an unprimeable number, because it can be changed into a prime (1384218497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305337 + ... + 1306396.

Almost surely, 2^1384218490 is an apocalyptic number.

1384218490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1384218490 is a deficient number, since it is larger than the sum of its proper divisors (1154386958).

1384218490 is a wasteful number, since it uses less digits than its factorization.

1384218490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611793.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1384218490 is about 37205.0868833820. The cubic root of 1384218490 is about 1114.4695714824.

The spelling of 1384218490 in words is "one billion, three hundred eighty-four million, two hundred eighteen thousand, four hundred ninety".