161258479 has 2 divisors, whose sum is σ = 161258480. Its totient is φ = 161258478.

The previous prime is 161258443. The next prime is 161258501. The reversal of 161258479 is 974852161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161258479 - 2⁷ = 161258351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161252479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80629239 + 80629240.

It is an arithmetic number, because the mean of its divisors is an integer number (80629240).

Almost surely, 2^161258479 is an apocalyptic number.

161258479 is a deficient number, since it is larger than the sum of its proper divisors (1).

161258479 is an equidigital number, since it uses as much as digits as its factorization.

161258479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 161258479 is about 12698.7589551105. The cubic root of 161258479 is about 544.3031567465.

The spelling of 161258479 in words is "one hundred sixty-one million, two hundred fifty-eight thousand, four hundred seventy-nine".