1649787102 has 40 divisors (see below), whose sum is σ = 3857481936. Its totient is φ = 526017888.

The previous prime is 1649787089. The next prime is 1649787103. The reversal of 1649787102 is 2017879461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649787103) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 217663 + ... + 225114.

Almost surely, 2^1649787102 is an apocalyptic number.

1649787102 is an abundant number, since it is smaller than the sum of its proper divisors (2207694834).

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

1649787102 is a wasteful number, since it uses less digits than its factorization.

1649787102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442814 (or 442805 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1649787102 is about 40617.5713454165. The cubic root of 1649787102 is about 1181.6149251956.

The spelling of 1649787102 in words is "one billion, six hundred forty-nine million, seven hundred eighty-seven thousand, one hundred two".