1649336632 has 16 divisors (see below), whose sum is σ = 3095024760. Its totient is φ = 823996704.

The previous prime is 1649336621. The next prime is 1649336639. The reversal of 1649336632 is 2366339461.

It is a super-2 number, since 2×1649336632² = 5440622651314206848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649336639) 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, 73438 + ... + 93229.

Almost surely, 2^1649336632 is an apocalyptic number.

It is an amenable number.

1649336632 is a deficient number, since it is larger than the sum of its proper divisors (1445688128).

1649336632 is a wasteful number, since it uses less digits than its factorization.

1649336632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167910 (or 167906 counting only the distinct ones).

The product of its digits is 419904, while the sum is 43.

The square root of 1649336632 is about 40612.0257066795. The cubic root of 1649336632 is about 1181.5073697969.

The spelling of 1649336632 in words is "one billion, six hundred forty-nine million, three hundred thirty-six thousand, six hundred thirty-two".