1656154541 has 2 divisors, whose sum is σ = 1656154542. Its totient is φ = 1656154540.

The previous prime is 1656154529. The next prime is 1656154567. The reversal of 1656154541 is 1454516561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1503112900 + 153041641 = 38770^2 + 12371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1656154541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1656154495 and 1656154504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656154141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828077270 + 828077271.

It is an arithmetic number, because the mean of its divisors is an integer number (828077271).

Almost surely, 2^1656154541 is an apocalyptic number.

It is an amenable number.

1656154541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656154541 is an equidigital number, since it uses as much as digits as its factorization.

1656154541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 1656154541 is about 40695.8786733989. The cubic root of 1656154541 is about 1183.1331417123.

The spelling of 1656154541 in words is "one billion, six hundred fifty-six million, one hundred fifty-four thousand, five hundred forty-one".