1649734198 has 8 divisors (see below), whose sum is σ = 2828115792. Its totient is φ = 707028936.

The previous prime is 1649734183. The next prime is 1649734199. The reversal of 1649734198 is 8914379461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649734199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58919065 + ... + 58919092.

It is an arithmetic number, because the mean of its divisors is an integer number (353514474).

Almost surely, 2^1649734198 is an apocalyptic number.

1649734198 is a deficient number, since it is larger than the sum of its proper divisors (1178381594).

1649734198 is a wasteful number, since it uses less digits than its factorization.

1649734198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117838166.

The product of its digits is 1306368, while the sum is 52.

The square root of 1649734198 is about 40616.9200949555. The cubic root of 1649734198 is about 1181.6022947125.

The spelling of 1649734198 in words is "one billion, six hundred forty-nine million, seven hundred thirty-four thousand, one hundred ninety-eight".