6453770782 has 4 divisors (see below), whose sum is σ = 9680656176. Its totient is φ = 3226885390.

The previous prime is 6453770753. The next prime is 6453770783. The reversal of 6453770782 is 2870773546.

It is a happy number.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6453770783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613442694 + ... + 1613442697.

It is an arithmetic number, because the mean of its divisors is an integer number (2420164044).

Almost surely, 2^6453770782 is an apocalyptic number.

6453770782 is a deficient number, since it is larger than the sum of its proper divisors (3226885394).

6453770782 is a wasteful number, since it uses less digits than its factorization.

6453770782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226885393.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The square root of 6453770782 is about 80335.3644542676. The cubic root of 6453770782 is about 1861.8206612844.

The spelling of 6453770782 in words is "six billion, four hundred fifty-three million, seven hundred seventy thousand, seven hundred eighty-two".