1000380834 has 16 divisors (see below), whose sum is σ = 2223068640. Its totient is φ = 333460260.

The previous prime is 1000380809. The next prime is 1000380863. The reversal of 1000380834 is 4380830001.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1000380798 and 1000380807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9262732 + ... + 9262839.

It is an arithmetic number, because the mean of its divisors is an integer number (138941790).

Almost surely, 2^1000380834 is an apocalyptic number.

1000380834 is an abundant number, since it is smaller than the sum of its proper divisors (1222687806).

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

1000380834 is a wasteful number, since it uses less digits than its factorization.

1000380834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18525582 (or 18525576 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1000380834 is about 31628.7975427458. The cubic root of 1000380834 is about 1000.1269285551.

The spelling of 1000380834 in words is "one billion, three hundred eighty thousand, eight hundred thirty-four".