1649579712 has 56 divisors (see below), whose sum is σ = 4761292992. Its totient is φ = 499872000.

The previous prime is 1649579699. The next prime is 1649579747. The reversal of 1649579712 is 2179759461.

It is a super-2 number, since 2×1649579712² = 5442226452484005888, which contains 22 as substring.

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, 388414 + ... + 392637.

Almost surely, 2^1649579712 is an apocalyptic number.

1649579712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1649579712 is an abundant number, since it is smaller than the sum of its proper divisors (3111713280).

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

1649579712 is a wasteful number, since it uses less digits than its factorization.

1649579712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781077 (or 781067 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 1649579712 is about 40615.0183060404. The cubic root of 1649579712 is about 1181.5654106475.

The spelling of 1649579712 in words is "one billion, six hundred forty-nine million, five hundred seventy-nine thousand, seven hundred twelve".