1007780638 has 8 divisors (see below), whose sum is σ = 1600592832. Its totient is φ = 474249696.

The previous prime is 1007780633. The next prime is 1007780659. The reversal of 1007780638 is 8360877001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1007780638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007780633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14820270 + ... + 14820337.

It is an arithmetic number, because the mean of its divisors is an integer number (200074104).

Almost surely, 2^1007780638 is an apocalyptic number.

1007780638 is a deficient number, since it is larger than the sum of its proper divisors (592812194).

1007780638 is a wasteful number, since it uses less digits than its factorization.

1007780638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29640626.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1007780638 is about 31745.5609180244. The cubic root of 1007780638 is about 1002.5868484449.

The spelling of 1007780638 in words is "one billion, seven million, seven hundred eighty thousand, six hundred thirty-eight".