1620466636 has 24 divisors (see below), whose sum is σ = 2869972560. Its totient is φ = 800515392.

The previous prime is 1620466609. The next prime is 1620466663. The reversal of 1620466636 is 6366640261.

It is an interprime number because it is at equal distance from previous prime (1620466609) and next prime (1620466663).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161626 + ... + 171358.

It is an arithmetic number, because the mean of its divisors is an integer number (119582190).

Almost surely, 2^1620466636 is an apocalyptic number.

It is an amenable number.

1620466636 is a deficient number, since it is larger than the sum of its proper divisors (1249505924).

1620466636 is a wasteful number, since it uses less digits than its factorization.

1620466636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233 (or 10231 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 1620466636 is about 40255.0200099317. The cubic root of 1620466636 is about 1174.5730480792.

The spelling of 1620466636 in words is "one billion, six hundred twenty million, four hundred sixty-six thousand, six hundred thirty-six".