11914377409 has 9 divisors (see below), whose sum is σ = 13097288449. Its totient is φ = 10830160660.

The previous prime is 11914377287. The next prime is 11914377439. The reversal of 11914377409 is 90477341911.

The square root of 11914377409 is 109153.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11914377409 - 2³³ = 3324442817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11914377439) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1195722 + ... + 1205644.

Almost surely, 2^11914377409 is an apocalyptic number.

11914377409 is the 109153-rd square number.

11914377409 is the 54577-th centered octagonal number.

It is an amenable number.

11914377409 is a deficient number, since it is larger than the sum of its proper divisors (1182911040).

11914377409 is an frugal number, since it uses more digits than its factorization.

11914377409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19868 (or 9934 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 11914377409 in words is "eleven billion, nine hundred fourteen million, three hundred seventy-seven thousand, four hundred nine".