1376143818 has 128 divisors (see below), whose sum is σ = 3406233600. Its totient is φ = 361962432.

The previous prime is 1376143793. The next prime is 1376143819. The reversal of 1376143818 is 8183416731.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1376143818.

It is not an unprimeable number, because it can be changed into a prime (1376143819) 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, 5232355 + ... + 5232617.

It is an arithmetic number, because the mean of its divisors is an integer number (26611200).

Almost surely, 2^1376143818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1376143818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703116800).

1376143818 is an abundant number, since it is smaller than the sum of its proper divisors (2030089782).

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

1376143818 is a wasteful number, since it uses less digits than its factorization.

1376143818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 96768, while the sum is 42.

The square root of 1376143818 is about 37096.4124680541. The cubic root of 1376143818 is about 1112.2983026675.

The spelling of 1376143818 in words is "one billion, three hundred seventy-six million, one hundred forty-three thousand, eight hundred eighteen".