649071900730 has 16 divisors (see below), whose sum is σ = 1274541187104. Its totient is φ = 236026145680.

The previous prime is 649071900713. The next prime is 649071900739. The reversal of 649071900730 is 37009170946.

It is not an unprimeable number, because it can be changed into a prime (649071900739) 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, 2950326712 + ... + 2950326931.

It is an arithmetic number, because the mean of its divisors is an integer number (79658824194).

Almost surely, 2^649071900730 is an apocalyptic number.

649071900730 is a deficient number, since it is larger than the sum of its proper divisors (625469286374).

649071900730 is a wasteful number, since it uses less digits than its factorization.

649071900730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900653661.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 649071900730 in words is "six hundred forty-nine billion, seventy-one million, nine hundred thousand, seven hundred thirty".