1620256295 has 24 divisors (see below), whose sum is σ = 2271700800. Its totient is φ = 1106142912.

The previous prime is 1620256277. The next prime is 1620256343. The reversal of 1620256295 is 5926520261.

It is not a de Polignac number, because 1620256295 - 2¹² = 1620252199 is a prime.

It is a super-2 number, since 2×1620256295² = 5250460922974254050, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 41666 + ... + 70544.

It is an arithmetic number, because the mean of its divisors is an integer number (94654200).

Almost surely, 2^1620256295 is an apocalyptic number.

1620256295 is a deficient number, since it is larger than the sum of its proper divisors (651444505).

1620256295 is a wasteful number, since it uses less digits than its factorization.

1620256295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29127 (or 29120 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1620256295 is about 40252.4073193145. The cubic root of 1620256295 is about 1174.5222249490.

The spelling of 1620256295 in words is "one billion, six hundred twenty million, two hundred fifty-six thousand, two hundred ninety-five".