1649976160 has 48 divisors (see below), whose sum is σ = 4454938656. Its totient is φ = 565705728.

The previous prime is 1649976151. The next prime is 1649976179. The reversal of 1649976160 is 616799461.

It is a congruent number.

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, 735477 + ... + 737716.

It is an arithmetic number, because the mean of its divisors is an integer number (92811222).

Almost surely, 2^1649976160 is an apocalyptic number.

1649976160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1649976160 is an abundant number, since it is smaller than the sum of its proper divisors (2804962496).

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

1649976160 is a wasteful number, since it uses less digits than its factorization.

1649976160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473215 (or 1473207 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 1649976160 is about 40619.8985720053. The cubic root of 1649976160 is about 1181.6600593469.

The spelling of 1649976160 in words is "one billion, six hundred forty-nine million, nine hundred seventy-six thousand, one hundred sixty".