1514393840 has 20 divisors (see below), whose sum is σ = 3520965864. Its totient is φ = 605757504.

The previous prime is 1514393821. The next prime is 1514393843. The reversal of 1514393840 is 483934151.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1514393794 and 1514393803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1514393843) 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, 9464882 + ... + 9465041.

Almost surely, 2^1514393840 is an apocalyptic number.

1514393840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1514393840 is an abundant number, since it is smaller than the sum of its proper divisors (2006572024).

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

1514393840 is a wasteful number, since it uses less digits than its factorization.

1514393840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18929936 (or 18929930 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1514393840 is about 38915.2134775077. The cubic root of 1514393840 is about 1148.3641113355.

The spelling of 1514393840 in words is "one billion, five hundred fourteen million, three hundred ninety-three thousand, eight hundred forty".