1540140748 has 12 divisors (see below), whose sum is σ = 2695840000. Its totient is φ = 769900752.

The previous prime is 1540140739. The next prime is 1540140793. The reversal of 1540140748 is 8470410451.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20748 + ... + 59251.

Almost surely, 2^1540140748 is an apocalyptic number.

It is an amenable number.

1540140748 is a deficient number, since it is larger than the sum of its proper divisors (1155699252).

1540140748 is a wasteful number, since it uses less digits than its factorization.

1540140748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84816 (or 84814 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 1540140748 is about 39244.6269952971. The cubic root of 1540140748 is about 1154.8355301375.

The spelling of 1540140748 in words is "one billion, five hundred forty million, one hundred forty thousand, seven hundred forty-eight".