1618379841 has 32 divisors (see below), whose sum is σ = 2364600448. Its totient is φ = 978531840.

The previous prime is 1618379813. The next prime is 1618379849. The reversal of 1618379841 is 1489738161.

It is not a de Polignac number, because 1618379841 - 2¹¹ = 1618377793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1618379849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1726725 + ... + 1727661.

It is an arithmetic number, because the mean of its divisors is an integer number (73893764).

Almost surely, 2^1618379841 is an apocalyptic number.

It is an amenable number.

1618379841 is a deficient number, since it is larger than the sum of its proper divisors (746220607).

1618379841 is a wasteful number, since it uses less digits than its factorization.

1618379841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its digits is 290304, while the sum is 48.

The square root of 1618379841 is about 40229.0919733469. The cubic root of 1618379841 is about 1174.0686365691.

The spelling of 1618379841 in words is "one billion, six hundred eighteen million, three hundred seventy-nine thousand, eight hundred forty-one".