1629122940 has 72 divisors (see below), whose sum is σ = 5056619568. Its totient is φ = 424327680.

The previous prime is 1629122923. The next prime is 1629122953. The reversal of 1629122940 is 492219261.

1629122940 is a `hidden beast` number, since 1 + 629 + 1 + 2 + 29 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1629122895 and 1629122904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97501 + ... + 112980.

Almost surely, 2^1629122940 is an apocalyptic number.

1629122940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1629122940 is an abundant number, since it is smaller than the sum of its proper divisors (3427496628).

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

1629122940 is a wasteful number, since it uses less digits than its factorization.

1629122940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210539 (or 210534 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1629122940 is about 40362.3951221926. The cubic root of 1629122940 is about 1176.6608027842.

The spelling of 1629122940 in words is "one billion, six hundred twenty-nine million, one hundred twenty-two thousand, nine hundred forty".