161419419 has 64 divisors (see below), whose sum is σ = 288046080. Its totient is φ = 87402240.

The previous prime is 161419417. The next prime is 161419429. The reversal of 161419419 is 914914161.

161419419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161419419 - 2¹ = 161419417 is a prime.

It is a super-2 number, since 2×161419419² = 52112457660595122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161419411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 286432 + ... + 286994.

It is an arithmetic number, because the mean of its divisors is an integer number (4500720).

Almost surely, 2^161419419 is an apocalyptic number.

161419419 is a deficient number, since it is larger than the sum of its proper divisors (126626661).

161419419 is a wasteful number, since it uses less digits than its factorization.

161419419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 651 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 161419419 is about 12705.0942145267. The cubic root of 161419419 is about 544.4841726004.

The spelling of 161419419 in words is "one hundred sixty-one million, four hundred nineteen thousand, four hundred nineteen".