1005512493 has 8 divisors (see below), whose sum is σ = 1345524448. Its totient is φ = 667921104.

The previous prime is 1005512479. The next prime is 1005512507. The reversal of 1005512493 is 3942155001.

It is an interprime number because it is at equal distance from previous prime (1005512479) and next prime (1005512507).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1005512493 - 2⁵ = 1005512461 is a prime.

It is a super-2 number, since 2×1005512493² = 2022110747158150098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005512493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005512093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604171 + ... + 605832.

It is an arithmetic number, because the mean of its divisors is an integer number (168190556).

Almost surely, 2^1005512493 is an apocalyptic number.

It is an amenable number.

1005512493 is a deficient number, since it is larger than the sum of its proper divisors (340011955).

1005512493 is a wasteful number, since it uses less digits than its factorization.

1005512493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210283.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1005512493 is about 31709.8169814964. The cubic root of 1005512493 is about 1001.8341315713.

Adding to 1005512493 its reverse (3942155001), we get a palindrome (4947667494).

The spelling of 1005512493 in words is "one billion, five million, five hundred twelve thousand, four hundred ninety-three".