1516145646 has 32 divisors (see below), whose sum is σ = 3278983680. Its totient is φ = 465531776.

The previous prime is 1516145639. The next prime is 1516145647. The reversal of 1516145646 is 6465416151.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516145647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153336 + ... + 162923.

It is an arithmetic number, because the mean of its divisors is an integer number (102468240).

Almost surely, 2^1516145646 is an apocalyptic number.

1516145646 is an abundant number, since it is smaller than the sum of its proper divisors (1762838034).

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

1516145646 is a wasteful number, since it uses less digits than its factorization.

1516145646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316328.

The product of its digits is 86400, while the sum is 39.

The square root of 1516145646 is about 38937.7149560680. The cubic root of 1516145646 is about 1148.8067385855.

The spelling of 1516145646 in words is "one billion, five hundred sixteen million, one hundred forty-five thousand, six hundred forty-six".