13819720690 has 8 divisors (see below), whose sum is σ = 24875497260. Its totient is φ = 5527888272.

The previous prime is 13819720687. The next prime is 13819720693. The reversal of 13819720690 is 9602791831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13819720687) and next prime (13819720693).

It can be written as a sum of positive squares in 2 ways, for example, as 13617256249 + 202464441 = 116693^2 + 14229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13819720690² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13819720690.

It is not an unprimeable number, because it can be changed into a prime (13819720693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690986025 + ... + 690986044.

Almost surely, 2^13819720690 is an apocalyptic number.

13819720690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13819720690 is a deficient number, since it is larger than the sum of its proper divisors (11055776570).

13819720690 is a wasteful number, since it uses less digits than its factorization.

13819720690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381972076.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 13819720690 in words is "thirteen billion, eight hundred nineteen million, seven hundred twenty thousand, six hundred ninety".