1010644421 has 4 divisors (see below), whose sum is σ = 1016696352. Its totient is φ = 1004592492.

The previous prime is 1010644417. The next prime is 1010644429. The reversal of 1010644421 is 1244460101.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1244460101 = 1871 ⋅665131.

It is a cyclic number.

It is not a de Polignac number, because 1010644421 - 2² = 1010644417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010644429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025715 + ... + 3026048.

It is an arithmetic number, because the mean of its divisors is an integer number (254174088).

Almost surely, 2^1010644421 is an apocalyptic number.

It is an amenable number.

1010644421 is a deficient number, since it is larger than the sum of its proper divisors (6051931).

1010644421 is an equidigital number, since it uses as much as digits as its factorization.

1010644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051930.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1010644421 is about 31790.6341710888. The cubic root of 1010644421 is about 1003.5356249570.

The spelling of 1010644421 in words is "one billion, ten million, six hundred forty-four thousand, four hundred twenty-one".