1009744681 has 4 divisors (see below), whose sum is σ = 1101539664. Its totient is φ = 917949700.

The previous prime is 1009744661. The next prime is 1009744693. The reversal of 1009744681 is 1864479001.

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 1009744681 - 2⁷ = 1009744553 is a prime.

It is a super-2 number, since 2×1009744681² = 2039168641615583522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009744601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45897475 + ... + 45897496.

It is an arithmetic number, because the mean of its divisors is an integer number (275384916).

Almost surely, 2^1009744681 is an apocalyptic number.

1009744681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1009744681 is a deficient number, since it is larger than the sum of its proper divisors (91794983).

1009744681 is an equidigital number, since it uses as much as digits as its factorization.

1009744681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91794982.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1009744681 is about 31776.4799970041. The cubic root of 1009744681 is about 1003.2377327729.

The spelling of 1009744681 in words is "one billion, nine million, seven hundred forty-four thousand, six hundred eighty-one".