1451705161 has 2 divisors, whose sum is σ = 1451705162. Its totient is φ = 1451705160.

The previous prime is 1451705159. The next prime is 1451705209. The reversal of 1451705161 is 1615071541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1271635600 + 180069561 = 35660^2 + 13419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451705161 - 2¹ = 1451705159 is a prime.

Together with 1451705159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1451705111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725852580 + 725852581.

It is an arithmetic number, because the mean of its divisors is an integer number (725852581).

Almost surely, 2^1451705161 is an apocalyptic number.

It is an amenable number.

1451705161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451705161 is an equidigital number, since it uses as much as digits as its factorization.

1451705161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 1451705161 is about 38101.2488115547. The cubic root of 1451705161 is about 1132.2946976808.

The spelling of 1451705161 in words is "one billion, four hundred fifty-one million, seven hundred five thousand, one hundred sixty-one".