1620256046 has 16 divisors (see below), whose sum is σ = 2569017600. Its totient is φ = 764274168.

The previous prime is 1620256021. The next prime is 1620256069. The reversal of 1620256046 is 6406520261.

It is a congruent number.

It is an unprimeable number.

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, 80120 + ... + 98283.

It is an arithmetic number, because the mean of its divisors is an integer number (160563600).

Almost surely, 2^1620256046 is an apocalyptic number.

1620256046 is a deficient number, since it is larger than the sum of its proper divisors (948761554).

1620256046 is a wasteful number, since it uses less digits than its factorization.

1620256046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178663.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1620256046 is about 40252.4042263316. The cubic root of 1620256046 is about 1174.5221647824.

The spelling of 1620256046 in words is "one billion, six hundred twenty million, two hundred fifty-six thousand, forty-six".