1909061469 has 12 divisors (see below), whose sum is σ = 3151466656. Its totient is φ = 1090892232.

The previous prime is 1909061417. The next prime is 1909061489. The reversal of 1909061469 is 9641609091.

It is not a de Polignac number, because 1909061469 - 2⁹ = 1909060957 is a prime.

It is a super-2 number, since 2×1909061469² = 7289031384840875922, 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 (1909061489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15151219 + ... + 15151344.

Almost surely, 2^1909061469 is an apocalyptic number.

It is an amenable number.

1909061469 is a deficient number, since it is larger than the sum of its proper divisors (1242405187).

1909061469 is a wasteful number, since it uses less digits than its factorization.

1909061469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302576 (or 30302573 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1909061469 is about 43692.8079779728. The cubic root of 1909061469 is about 1240.5281891764.

The spelling of 1909061469 in words is "one billion, nine hundred nine million, sixty-one thousand, four hundred sixty-nine".