1516046640 has 40 divisors (see below), whose sum is σ = 4699745328. Its totient is φ = 404279040.

The previous prime is 1516046629. The next prime is 1516046641. The reversal of 1516046640 is 466406151.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1516046641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3158191 + ... + 3158670.

Almost surely, 2^1516046640 is an apocalyptic number.

1516046640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1516046640 is an abundant number, since it is smaller than the sum of its proper divisors (3183698688).

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

1516046640 is a wasteful number, since it uses less digits than its factorization.

1516046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316877 (or 6316871 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1516046640 is about 38936.4435972265. The cubic root of 1516046640 is about 1148.7817319211.

The spelling of 1516046640 in words is "one billion, five hundred sixteen million, forty-six thousand, six hundred forty".