649031531929 has 8 divisors (see below), whose sum is σ = 708041280672. Its totient is φ = 590022930240.

The previous prime is 649031531923. The next prime is 649031531959. The reversal of 649031531929 is 929135130946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649031531929 - 2³ = 649031531921 is a prime.

It is a super-2 number, since 2×649031531929² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (649031531921) 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, 1258302 + ... + 1697464.

It is an arithmetic number, because the mean of its divisors is an integer number (88505160084).

Almost surely, 2^649031531929 is an apocalyptic number.

It is an amenable number.

649031531929 is a deficient number, since it is larger than the sum of its proper divisors (59009748743).

649031531929 is a wasteful number, since it uses less digits than its factorization.

649031531929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573527.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 649031531929 in words is "six hundred forty-nine billion, thirty-one million, five hundred thirty-one thousand, nine hundred twenty-nine".