649413492 has 96 divisors (see below), whose sum is σ = 1915506432. Its totient is φ = 166634496.

The previous prime is 649413467. The next prime is 649413493. The reversal of 649413492 is 294314946.

649413492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649413493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32368 + ... + 48440.

It is an arithmetic number, because the mean of its divisors is an integer number (19953192).

Almost surely, 2^649413492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649413492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957753216).

649413492 is an abundant number, since it is smaller than the sum of its proper divisors (1266092940).

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

649413492 is a wasteful number, since it uses less digits than its factorization.

649413492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16137 (or 16135 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 649413492 is about 25483.5926038697. The cubic root of 649413492 is about 865.9784853144.

The spelling of 649413492 in words is "six hundred forty-nine million, four hundred thirteen thousand, four hundred ninety-two".