1649031802 has 16 divisors (see below), whose sum is σ = 2720721024. Its totient is φ = 749558700.

The previous prime is 1649031779. The next prime is 1649031809. The reversal of 1649031802 is 2081309461.

It is not an unprimeable number, because it can be changed into a prime (1649031809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307074 + ... + 312397.

It is an arithmetic number, because the mean of its divisors is an integer number (170045064).

Almost surely, 2^1649031802 is an apocalyptic number.

1649031802 is a deficient number, since it is larger than the sum of its proper divisors (1071689222).

1649031802 is an equidigital number, since it uses as much as digits as its factorization.

1649031802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619506 (or 619484 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1649031802 is about 40608.2725808424. The cubic root of 1649031802 is about 1181.4345766761.

The spelling of 1649031802 in words is "one billion, six hundred forty-nine million, thirty-one thousand, eight hundred two".