1656232533 has 12 divisors (see below), whose sum is σ = 2431555308. Its totient is φ = 1086053760.

The previous prime is 1656232511. The next prime is 1656232537. The reversal of 1656232533 is 3352326561.

1656232533 is a `hidden beast` number, since 1 + 6 + 5 + 623 + 25 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 229886244 + 1426346289 = 15162^2 + 37767^2 .

It is not a de Polignac number, because 1656232533 - 2⁶ = 1656232469 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656232537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1507860 + ... + 1508957.

It is an arithmetic number, because the mean of its divisors is an integer number (202629609).

Almost surely, 2^1656232533 is an apocalyptic number.

It is an amenable number.

1656232533 is a deficient number, since it is larger than the sum of its proper divisors (775322775).

1656232533 is a wasteful number, since it uses less digits than its factorization.

1656232533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016884 (or 3016881 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 1656232533 is about 40696.8368918274. The cubic root of 1656232533 is about 1183.1517135443.

The spelling of 1656232533 in words is "one billion, six hundred fifty-six million, two hundred thirty-two thousand, five hundred thirty-three".