13840488490 has 16 divisors (see below), whose sum is σ = 25520511240. Its totient is φ = 5401166080.

The previous prime is 13840488463. The next prime is 13840488491. The reversal of 13840488490 is 9488404831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3546559809 + 10293928681 = 59553^2 + 101459^2 .

It is not an unprimeable number, because it can be changed into a prime (13840488491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16878235 + ... + 16879054.

Almost surely, 2^13840488490 is an apocalyptic number.

13840488490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13840488490 is a deficient number, since it is larger than the sum of its proper divisors (11680022750).

13840488490 is a wasteful number, since it uses less digits than its factorization.

13840488490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33757337.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 13840488490 in words is "thirteen billion, eight hundred forty million, four hundred eighty-eight thousand, four hundred ninety".