2154059161 has 2 divisors, whose sum is σ = 2154059162. Its totient is φ = 2154059160.

The previous prime is 2154059153. The next prime is 2154059191. The reversal of 2154059161 is 1619504512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1166905600 + 987153561 = 34160^2 + 31419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154059161 - 2³ = 2154059153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154059101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077029580 + 1077029581.

It is an arithmetic number, because the mean of its divisors is an integer number (1077029581).

Almost surely, 2^2154059161 is an apocalyptic number.

It is an amenable number.

2154059161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154059161 is an equidigital number, since it uses as much as digits as its factorization.

2154059161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 2154059161 is about 46411.8428959678. The cubic root of 2154059161 is about 1291.4746194077.

The spelling of 2154059161 in words is "two billion, one hundred fifty-four million, fifty-nine thousand, one hundred sixty-one".