161476129 has 4 divisors (see below), whose sum is σ = 161612676. Its totient is φ = 161339584.

The previous prime is 161476111. The next prime is 161476157. The reversal of 161476129 is 921674161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97476129 + 64000000 = 9873^2 + 8000^2 .

It is a cyclic number.

It is not a de Polignac number, because 161476129 - 2¹⁷ = 161345057 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161476199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66484 + ... + 68869.

It is an arithmetic number, because the mean of its divisors is an integer number (40403169).

Almost surely, 2^161476129 is an apocalyptic number.

It is an amenable number.

161476129 is a deficient number, since it is larger than the sum of its proper divisors (136547).

161476129 is a wasteful number, since it uses less digits than its factorization.

161476129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136546.

The product of its digits is 18144, while the sum is 37.

The square root of 161476129 is about 12707.3258004979. The cubic root of 161476129 is about 544.5479280071.

The spelling of 161476129 in words is "one hundred sixty-one million, four hundred seventy-six thousand, one hundred twenty-nine".