1618949804 has 24 divisors (see below), whose sum is σ = 2867589648. Its totient is φ = 799680960.

The previous prime is 1618949791. The next prime is 1618949897. The reversal of 1618949804 is 4089498161.

It is an unprimeable number.

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, 154574 + ... + 164714.

It is an arithmetic number, because the mean of its divisors is an integer number (119482902).

Almost surely, 2^1618949804 is an apocalyptic number.

It is an amenable number.

1618949804 is a deficient number, since it is larger than the sum of its proper divisors (1248639844).

1618949804 is a wasteful number, since it uses less digits than its factorization.

1618949804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10625 (or 10623 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1618949804 is about 40236.1753152558. The cubic root of 1618949804 is about 1174.2064487035.

The spelling of 1618949804 in words is "one billion, six hundred eighteen million, nine hundred forty-nine thousand, eight hundred four".