1649061306 has 24 divisors (see below), whose sum is σ = 3688224384. Its totient is φ = 531955080.

The previous prime is 1649061301. The next prime is 1649061311. The reversal of 1649061306 is 6031609461.

1649061306 is a `hidden beast` number, since 1 + 649 + 0 + 6 + 1 + 3 + 0 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1649061301) and next prime (1649061311).

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 in 11 ways as a sum of consecutive naturals, for example, 1477096 + ... + 1478211.

It is an arithmetic number, because the mean of its divisors is an integer number (153676016).

Almost surely, 2^1649061306 is an apocalyptic number.

1649061306 is an abundant number, since it is smaller than the sum of its proper divisors (2039163078).

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

1649061306 is a wasteful number, since it uses less digits than its factorization.

1649061306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955346 (or 2955343 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1649061306 is about 40608.6358549509. The cubic root of 1649061306 is about 1181.4416225960.

The spelling of 1649061306 in words is "one billion, six hundred forty-nine million, sixty-one thousand, three hundred six".