13949049660 has 384 divisors, whose sum is σ = 50467221504. Its totient is φ = 2797977600.

The previous prime is 13949049659. The next prime is 13949049679. The reversal of 13949049660 is 6694094931.

It is a super-2 number, since 2×13949049660² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34785460 + ... + 34785860.

It is an arithmetic number, because the mean of its divisors is an integer number (131425056).

Almost surely, 2^13949049660 is an apocalyptic number.

13949049660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13949049660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25233610752).

13949049660 is an abundant number, since it is smaller than the sum of its proper divisors (36518171844).

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

13949049660 is a wasteful number, since it uses less digits than its factorization.

13949049660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 51.

The spelling of 13949049660 in words is "thirteen billion, nine hundred forty-nine million, forty-nine thousand, six hundred sixty".