1540642416 has 40 divisors (see below), whose sum is σ = 3982316544. Its totient is φ = 513247680.

The previous prime is 1540642409. The next prime is 1540642427. The reversal of 1540642416 is 6142460451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83121 + ... + 99951.

Almost surely, 2^1540642416 is an apocalyptic number.

1540642416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1540642416 is an abundant number, since it is smaller than the sum of its proper divisors (2441674128).

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

1540642416 is a wasteful number, since it uses less digits than its factorization.

1540642416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18749 (or 18743 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1540642416 is about 39251.0180250143. The cubic root of 1540642416 is about 1154.9609042069.

The spelling of 1540642416 in words is "one billion, five hundred forty million, six hundred forty-two thousand, four hundred sixteen".