1049208509 has 8 divisors (see below), whose sum is σ = 1059697728. Its totient is φ = 1038732160.

The previous prime is 1049208493. The next prime is 1049208527. The reversal of 1049208509 is 9058029401.

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

It is a cyclic number.

It is not a de Polignac number, because 1049208509 - 2⁴ = 1049208493 is a prime.

It is a super-2 number, since 2×1049208509² = 2201676990716006162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049202509) 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, 288269 + ... + 291885.

It is an arithmetic number, because the mean of its divisors is an integer number (132462216).

Almost surely, 2^1049208509 is an apocalyptic number.

It is an amenable number.

1049208509 is a deficient number, since it is larger than the sum of its proper divisors (10489219).

1049208509 is a wasteful number, since it uses less digits than its factorization.

1049208509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1049208509 is about 32391.4882183576. The cubic root of 1049208509 is about 1016.1409057704.

The spelling of 1049208509 in words is "one billion, forty-nine million, two hundred eight thousand, five hundred nine".