1656234216 has 160 divisors (see below), whose sum is σ = 5709728640. Its totient is φ = 436793472.

The previous prime is 1656234211. The next prime is 1656234227. The reversal of 1656234216 is 6124326561.

1656234216 is a `hidden beast` number, since 1 + 6 + 5 + 623 + 4 + 21 + 6 = 666.

It is a super-2 number, since 2×1656234216² = 5486223556498269312, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1656234211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44925 + ... + 73011.

It is an arithmetic number, because the mean of its divisors is an integer number (35685804).

Almost surely, 2^1656234216 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 1656234216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854864320).

1656234216 is an abundant number, since it is smaller than the sum of its proper divisors (4053494424).

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

1656234216 is a wasteful number, since it uses less digits than its factorization.

1656234216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125 (or 28112 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1656234216 is about 40696.8575691048. The cubic root of 1656234216 is about 1183.1521143020.

The spelling of 1656234216 in words is "one billion, six hundred fifty-six million, two hundred thirty-four thousand, two hundred sixteen".