14921915490 has 96 divisors (see below), whose sum is σ = 40424529600. Its totient is φ = 3814231680.

The previous prime is 14921915471. The next prime is 14921915521. The reversal of 14921915490 is 9451912941.

14921915490 is a `hidden beast` number, since 1 + 4 + 92 + 19 + 1 + 549 + 0 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 342225 + ... + 383355.

It is an arithmetic number, because the mean of its divisors is an integer number (421088850).

Almost surely, 2^14921915490 is an apocalyptic number.

14921915490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 14921915490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20212264800).

14921915490 is an abundant number, since it is smaller than the sum of its proper divisors (25502614110).

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

14921915490 is a wasteful number, since it uses less digits than its factorization.

14921915490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41312 (or 41309 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 14921915490 in words is "fourteen billion, nine hundred twenty-one million, nine hundred fifteen thousand, four hundred ninety".