1018952409 has 8 divisors (see below), whose sum is σ = 1438521120. Its totient is φ = 639342656.

The previous prime is 1018952327. The next prime is 1018952447. The reversal of 1018952409 is 9042598101.

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 1018952409 - 2¹² = 1018948313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1018953409) 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, 9989679 + ... + 9989780.

It is an arithmetic number, because the mean of its divisors is an integer number (179815140).

Almost surely, 2^1018952409 is an apocalyptic number.

It is an amenable number.

1018952409 is a deficient number, since it is larger than the sum of its proper divisors (419568711).

1018952409 is a wasteful number, since it uses less digits than its factorization.

1018952409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19979479.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1018952409 is about 31921.0339588178. The cubic root of 1018952409 is about 1006.2779742284.

The spelling of 1018952409 in words is "one billion, eighteen million, nine hundred fifty-two thousand, four hundred nine".