1621127196 has 240 divisors, whose sum is σ = 4917749760. Its totient is φ = 461427840.

The previous prime is 1621127171. The next prime is 1621127269. The reversal of 1621127196 is 6917211261.

1621127196 is a `hidden beast` number, since 1 + 621 + 1 + 27 + 1 + 9 + 6 = 666.

It is a super-2 number, since 2×1621127196² = 5256106771221644832, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1621127196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3761101 + ... + 3761531.

It is an arithmetic number, because the mean of its divisors is an integer number (20490624).

Almost surely, 2^1621127196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1621127196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458874880).

1621127196 is an abundant number, since it is smaller than the sum of its proper divisors (3296622564).

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

1621127196 is a wasteful number, since it uses less digits than its factorization.

1621127196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 515 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 1621127196 is about 40263.2238649614. The cubic root of 1621127196 is about 1174.7326256877.

The spelling of 1621127196 in words is "one billion, six hundred twenty-one million, one hundred twenty-seven thousand, one hundred ninety-six".