649549194 has 48 divisors (see below), whose sum is σ = 1513440288. Its totient is φ = 185310048.

The previous prime is 649549177. The next prime is 649549261. The reversal of 649549194 is 491945946.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277252 + ... + 279584.

It is an arithmetic number, because the mean of its divisors is an integer number (31530006).

Almost surely, 2^649549194 is an apocalyptic number.

649549194 is an abundant number, since it is smaller than the sum of its proper divisors (863891094).

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

649549194 is a wasteful number, since it uses less digits than its factorization.

649549194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299 (or 3292 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 649549194 is about 25486.2550014709. The cubic root of 649549194 is about 866.0387996491.

The spelling of 649549194 in words is "six hundred forty-nine million, five hundred forty-nine thousand, one hundred ninety-four".