13481769 has 16 divisors (see below), whose sum is σ = 20932992. Its totient is φ = 7557888.

The previous prime is 13481761. The next prime is 13481771. The reversal of 13481769 is 96718431.

It is not a de Polignac number, because 13481769 - 2³ = 13481761 is a prime.

It is a super-2 number, since 2×13481769² = 363516190738722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13481761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4944 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1308312).

Almost surely, 2^13481769 is an apocalyptic number.

It is an amenable number.

13481769 is a deficient number, since it is larger than the sum of its proper divisors (7451223).

13481769 is a wasteful number, since it uses less digits than its factorization.

13481769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12176.

The product of its digits is 36288, while the sum is 39.

The square root of 13481769 is about 3671.7528511598. The cubic root of 13481769 is about 238.0029246634.

The spelling of 13481769 in words is "thirteen million, four hundred eighty-one thousand, seven hundred sixty-nine".