648495038 has 4 divisors (see below), whose sum is σ = 972742560. Its totient is φ = 324247518.

The previous prime is 648495037. The next prime is 648495053. The reversal of 648495038 is 830594846.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 648494983 and 648495001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648495037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162123758 + ... + 162123761.

It is an arithmetic number, because the mean of its divisors is an integer number (243185640).

Almost surely, 2^648495038 is an apocalyptic number.

648495038 is a deficient number, since it is larger than the sum of its proper divisors (324247522).

648495038 is a wasteful number, since it uses less digits than its factorization.

648495038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324247521.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 648495038 is about 25465.5657310023. The cubic root of 648495038 is about 865.5700466932.

The spelling of 648495038 in words is "six hundred forty-eight million, four hundred ninety-five thousand, thirty-eight".