1649061308 has 6 divisors (see below), whose sum is σ = 2885857296. Its totient is φ = 824530652.

The previous prime is 1649061301. The next prime is 1649061311. The reversal of 1649061308 is 8031609461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649061301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206132660 + ... + 206132667.

It is an arithmetic number, because the mean of its divisors is an integer number (480976216).

Almost surely, 2^1649061308 is an apocalyptic number.

It is an amenable number.

1649061308 is a deficient number, since it is larger than the sum of its proper divisors (1236795988).

1649061308 is a wasteful number, since it uses less digits than its factorization.

1649061308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412265331 (or 412265329 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1649061308 is about 40608.6358795762. The cubic root of 1649061308 is about 1181.4416230736.

The spelling of 1649061308 in words is "one billion, six hundred forty-nine million, sixty-one thousand, three hundred eight".