1612172620 has 24 divisors (see below), whose sum is σ = 3391454304. Its totient is φ = 643746816.

The previous prime is 1612172593. The next prime is 1612172651. The reversal of 1612172620 is 262712161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58312 + ... + 81391.

It is an arithmetic number, because the mean of its divisors is an integer number (141310596).

Almost surely, 2^1612172620 is an apocalyptic number.

1612172620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1612172620 is an abundant number, since it is smaller than the sum of its proper divisors (1779281684).

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

1612172620 is a wasteful number, since it uses less digits than its factorization.

1612172620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140289 (or 140287 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1612172620 is about 40151.8694458926. The cubic root of 1612172620 is about 1172.5656847831.

Adding to 1612172620 its reverse (262712161), we get a palindrome (1874884781).

The spelling of 1612172620 in words is "one billion, six hundred twelve million, one hundred seventy-two thousand, six hundred twenty".