1384145994 has 64 divisors (see below), whose sum is σ = 3500070912. Its totient is φ = 354446400.

The previous prime is 1384145989. The next prime is 1384145999. The reversal of 1384145994 is 4995414831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1384145989) and next prime (1384145999).

It is not an unprimeable number, because it can be changed into a prime (1384145999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11704 + ... + 53900.

It is an arithmetic number, because the mean of its divisors is an integer number (54688608).

Almost surely, 2^1384145994 is an apocalyptic number.

1384145994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384145994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750035456).

1384145994 is an abundant number, since it is smaller than the sum of its proper divisors (2115924918).

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

1384145994 is a wasteful number, since it uses less digits than its factorization.

1384145994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42291.

The product of its digits is 622080, while the sum is 48.

The square root of 1384145994 is about 37204.1125952495. The cubic root of 1384145994 is about 1114.4501150172.

The spelling of 1384145994 in words is "one billion, three hundred eighty-four million, one hundred forty-five thousand, nine hundred ninety-four".