1649061307 has 16 divisors (see below), whose sum is σ = 1721606400. Its totient is φ = 1577635360.

The previous prime is 1649061301. The next prime is 1649061311. The reversal of 1649061307 is 7031609461.

It is a cyclic number.

It is not a de Polignac number, because 1649061307 - 2³ = 1649061299 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2548458 + ... + 2549104.

It is an arithmetic number, because the mean of its divisors is an integer number (107600400).

Almost surely, 2^1649061307 is an apocalyptic number.

1649061307 is a deficient number, since it is larger than the sum of its proper divisors (72545093).

1649061307 is a wasteful number, since it uses less digits than its factorization.

1649061307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1649061307 is about 40608.6358672635. The cubic root of 1649061307 is about 1181.4416228348.

The spelling of 1649061307 in words is "one billion, six hundred forty-nine million, sixty-one thousand, three hundred seven".