1007491081 has 3 divisors (see below), whose sum is σ = 1007522823. Its totient is φ = 1007459340.

The previous prime is 1007491061. The next prime is 1007491099. The reversal of 1007491081 is 1801947001.

The square root of 1007491081 is 31741.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 715081081 + 292410000 = 26741^2 + 17100^2 .

It is not a de Polignac number, because 1007491081 - 2⁹ = 1007490569 is a prime.

It is a super-2 number, since 2×1007491081² = 2030076556589097122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1007491061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15871 + ... + 47611.

It is an arithmetic number, because the mean of its divisors is an integer number (335840941).

Almost surely, 2^1007491081 is an apocalyptic number.

1007491081 is the 31741-st square number.

1007491081 is the 15871-st centered octagonal number.

It is an amenable number.

1007491081 is a deficient number, since it is larger than the sum of its proper divisors (31742).

1007491081 is an frugal number, since it uses more digits than its factorization.

1007491081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63482 (or 31741 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The cubic root of 1007491081 is about 1002.4908176761.

The spelling of 1007491081 in words is "one billion, seven million, four hundred ninety-one thousand, eighty-one".