13890803490 has 48 divisors (see below), whose sum is σ = 36708170616. Its totient is φ = 3643488000.

The previous prime is 13890803489. The next prime is 13890803497. The reversal of 13890803490 is 9430809831.

13890803490 is a `hidden beast` number, since 1 + 3 + 89 + 0 + 80 + 3 + 490 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2458275561 + 11432527929 = 49581^2 + 106923^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13890803497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1259611 + ... + 1270590.

Almost surely, 2^13890803490 is an apocalyptic number.

13890803490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13890803490 is an abundant number, since it is smaller than the sum of its proper divisors (22817367126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13890803490 is a wasteful number, since it uses less digits than its factorization.

13890803490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530275 (or 2530272 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 13890803490 in words is "thirteen billion, eight hundred ninety million, eight hundred three thousand, four hundred ninety".