1540663468 has 24 divisors (see below), whose sum is σ = 2731905792. Its totient is φ = 760175184.

The previous prime is 1540663463. The next prime is 1540663511. The reversal of 1540663468 is 8643660451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1540663463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105721 + ... + 119407.

It is an arithmetic number, because the mean of its divisors is an integer number (113829408).

Almost surely, 2^1540663468 is an apocalyptic number.

It is an amenable number.

1540663468 is a deficient number, since it is larger than the sum of its proper divisors (1191242324).

1540663468 is a wasteful number, since it uses less digits than its factorization.

1540663468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14061 (or 14059 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 1540663468 is about 39251.2861954866. The cubic root of 1540663468 is about 1154.9661648103.

The spelling of 1540663468 in words is "one billion, five hundred forty million, six hundred sixty-three thousand, four hundred sixty-eight".