1009123269 has 64 divisors (see below), whose sum is σ = 1807196160. Its totient is φ = 484989120.

The previous prime is 1009123267. The next prime is 1009123273. The reversal of 1009123269 is 9623219001.

It is not a de Polignac number, because 1009123269 - 2¹ = 1009123267 is a prime.

It is a super-2 number, since 2×1009123269² = 2036659544074492722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009123267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186054 + ... + 191400.

It is an arithmetic number, because the mean of its divisors is an integer number (28237440).

Almost surely, 2^1009123269 is an apocalyptic number.

1009123269 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1009123269 is a deficient number, since it is larger than the sum of its proper divisors (798072891).

1009123269 is a wasteful number, since it uses less digits than its factorization.

1009123269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1009123269 is about 31766.7006313215. The cubic root of 1009123269 is about 1003.0318880316.

The spelling of 1009123269 in words is "one billion, nine million, one hundred twenty-three thousand, two hundred sixty-nine".