1649374120 has 32 divisors (see below), whose sum is σ = 3771934920. Its totient is φ = 648933120.

The previous prime is 1649374109. The next prime is 1649374169. The reversal of 1649374120 is 214739461.

It can be written as a sum of positive squares in 4 ways, for example, as 1406700036 + 242674084 = 37506^2 + 15578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1649374120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335547 + ... + 340426.

Almost surely, 2^1649374120 is an apocalyptic number.

1649374120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1649374120 is an abundant number, since it is smaller than the sum of its proper divisors (2122560800).

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

1649374120 is a wasteful number, since it uses less digits than its factorization.

1649374120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676045 (or 676041 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1649374120 is about 40612.4872422264. The cubic root of 1649374120 is about 1181.5163212771.

It can be divided in two parts, 1649 and 374120, that added together give a square (375769 = 613²).

The spelling of 1649374120 in words is "one billion, six hundred forty-nine million, three hundred seventy-four thousand, one hundred twenty".