1629122140 has 24 divisors (see below), whose sum is σ = 3428201952. Its totient is φ = 650306880.

The previous prime is 1629122129. The next prime is 1629122141. The reversal of 1629122140 is 412219261.

It is a junction number, because it is equal to n+sod(n) for n = 1629122099 and 1629122108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629122141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73891 + ... + 93370.

It is an arithmetic number, because the mean of its divisors is an integer number (142841748).

Almost surely, 2^1629122140 is an apocalyptic number.

1629122140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1629122140 is an abundant number, since it is smaller than the sum of its proper divisors (1799079812).

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

1629122140 is a wasteful number, since it uses less digits than its factorization.

1629122140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167757 (or 167755 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1629122140 is about 40362.3852119768. The cubic root of 1629122140 is about 1176.6606101798.

The spelling of 1629122140 in words is "one billion, six hundred twenty-nine million, one hundred twenty-two thousand, one hundred forty".