1629992085 has 32 divisors (see below), whose sum is σ = 2658355200. Its totient is φ = 852667200.

The previous prime is 1629992081. The next prime is 1629992087. The reversal of 1629992085 is 5802999261.

It is not a de Polignac number, because 1629992085 - 2² = 1629992081 is a prime.

It is a super-3 number, since 3×1629992085³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629992081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208090 + ... + 215780.

It is an arithmetic number, because the mean of its divisors is an integer number (83073600).

Almost surely, 2^1629992085 is an apocalyptic number.

1629992085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1629992085 is a deficient number, since it is larger than the sum of its proper divisors (1028363115).

1629992085 is a wasteful number, since it uses less digits than its factorization.

1629992085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 1629992085 is about 40373.1604534498. The cubic root of 1629992085 is about 1176.8700170005.

The spelling of 1629992085 in words is "one billion, six hundred twenty-nine million, nine hundred ninety-two thousand, eighty-five".