1540430066 has 16 divisors (see below), whose sum is σ = 2651700480. Its totient is φ = 657443520.

The previous prime is 1540430063. The next prime is 1540430081. The reversal of 1540430066 is 6600340451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1540430063) 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, 224906 + ... + 231653.

It is an arithmetic number, because the mean of its divisors is an integer number (165731280).

Almost surely, 2^1540430066 is an apocalyptic number.

1540430066 is a deficient number, since it is larger than the sum of its proper divisors (1111270414).

1540430066 is a wasteful number, since it uses less digits than its factorization.

1540430066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456809.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1540430066 is about 39248.3129064168. The cubic root of 1540430066 is about 1154.9078382014.

The spelling of 1540430066 in words is "one billion, five hundred forty million, four hundred thirty thousand, sixty-six".