1540144146 has 8 divisors (see below), whose sum is σ = 3080288304. Its totient is φ = 513381380.

The previous prime is 1540144117. The next prime is 1540144153. The reversal of 1540144146 is 6414410451.

It is a sphenic number, since it is the product of 3 distinct primes.

1540144146 is an admirable 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, 128345340 + ... + 128345351.

It is an arithmetic number, because the mean of its divisors is an integer number (385036038).

Almost surely, 2^1540144146 is an apocalyptic number.

1540144146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1540144146 is a wasteful number, since it uses less digits than its factorization.

1540144146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256690696.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1540144146 is about 39244.6702878238. The cubic root of 1540144146 is about 1154.8363794383.

Adding to 1540144146 its reverse (6414410451), we get a palindrome (7954554597).

The spelling of 1540144146 in words is "one billion, five hundred forty million, one hundred forty-four thousand, one hundred forty-six".