161456435 has 32 divisors (see below), whose sum is σ = 232630272. Its totient is φ = 105177600.

The previous prime is 161456411. The next prime is 161456441. The reversal of 161456435 is 534654161.

It is not a de Polignac number, because 161456435 - 2⁶ = 161456371 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 161456395 and 161456404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133835 + ... + 135035.

It is an arithmetic number, because the mean of its divisors is an integer number (7269696).

Almost surely, 2^161456435 is an apocalyptic number.

161456435 is a deficient number, since it is larger than the sum of its proper divisors (71173837).

161456435 is a wasteful number, since it uses less digits than its factorization.

161456435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 43200, while the sum is 35.

The square root of 161456435 is about 12706.5508695318. The cubic root of 161456435 is about 544.5257890012.

The spelling of 161456435 in words is "one hundred sixty-one million, four hundred fifty-six thousand, four hundred thirty-five".