1645154041 has 2 divisors, whose sum is σ = 1645154042. Its totient is φ = 1645154040.

The previous prime is 1645154033. The next prime is 1645154057. The reversal of 1645154041 is 1404515461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1622075625 + 23078416 = 40275^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1645154041 - 2³ = 1645154033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1645153994 and 1645154012.

It is not a weakly prime, because it can be changed into another prime (1645154081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822577020 + 822577021.

It is an arithmetic number, because the mean of its divisors is an integer number (822577021).

Almost surely, 2^1645154041 is an apocalyptic number.

It is an amenable number.

1645154041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645154041 is an equidigital number, since it uses as much as digits as its factorization.

1645154041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1645154041 is about 40560.4985299737. The cubic root of 1645154041 is about 1180.5077870555.

The spelling of 1645154041 in words is "one billion, six hundred forty-five million, one hundred fifty-four thousand, forty-one".