1612211172 has 96 divisors (see below), whose sum is σ = 4562202624. Its totient is φ = 436406400.

The previous prime is 1612211171. The next prime is 1612211179. The reversal of 1612211172 is 2711122161.

It is a super-2 number, since 2×1612211172² = 5198449726243227168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1612211171) 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, 38043 + ... + 68349.

It is an arithmetic number, because the mean of its divisors is an integer number (47522944).

Almost surely, 2^1612211172 is an apocalyptic number.

1612211172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1612211172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2281101312).

1612211172 is an abundant number, since it is smaller than the sum of its proper divisors (2949991452).

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

1612211172 is a wasteful number, since it uses less digits than its factorization.

1612211172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30369 (or 30367 counting only the distinct ones).

The product of its digits is 336, while the sum is 24.

The square root of 1612211172 is about 40152.3495202958. The cubic root of 1612211172 is about 1172.5750312579.

The spelling of 1612211172 in words is "one billion, six hundred twelve million, two hundred eleven thousand, one hundred seventy-two".