1000900649 has 4 divisors (see below), whose sum is σ = 1143886464. Its totient is φ = 857914836.

The previous prime is 1000900613. The next prime is 1000900661. The reversal of 1000900649 is 9460090001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000900649 - 2⁸ = 1000900393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000900609) 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, 71492897 + ... + 71492910.

It is an arithmetic number, because the mean of its divisors is an integer number (285971616).

Almost surely, 2^1000900649 is an apocalyptic number.

It is an amenable number.

1000900649 is a deficient number, since it is larger than the sum of its proper divisors (142985815).

1000900649 is an equidigital number, since it uses as much as digits as its factorization.

1000900649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142985814.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1000900649 is about 31637.0139077632. The cubic root of 1000900649 is about 1000.3001262486.

The spelling of 1000900649 in words is "one billion, nine hundred thousand, six hundred forty-nine".