618149194 has 16 divisors (see below), whose sum is σ = 998968320. Its totient is φ = 285179760.

The previous prime is 618149171. The next prime is 618149197. The reversal of 618149194 is 491941816.

It is a self number, because there is not a number n which added to its sum of digits gives 618149194.

It is not an unprimeable number, because it can be changed into a prime (618149197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98647 + ... + 104725.

It is an arithmetic number, because the mean of its divisors is an integer number (62435520).

Almost surely, 2^618149194 is an apocalyptic number.

618149194 is a deficient number, since it is larger than the sum of its proper divisors (380819126).

618149194 is a wasteful number, since it uses less digits than its factorization.

618149194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005.

The product of its digits is 62208, while the sum is 43.

The square root of 618149194 is about 24862.6063396419. The cubic root of 618149194 is about 851.8525656486.

The spelling of 618149194 in words is "six hundred eighteen million, one hundred forty-nine thousand, one hundred ninety-four".