161497476 has 120 divisors (see below), whose sum is σ = 498279936. Its totient is φ = 44634240.

The previous prime is 161497463. The next prime is 161497481. The reversal of 161497476 is 674794161.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69160 + ... + 71456.

Almost surely, 2^161497476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161497476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249139968).

161497476 is an abundant number, since it is smaller than the sum of its proper divisors (336782460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161497476 is a wasteful number, since it uses less digits than its factorization.

161497476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2340 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 161497476 is about 12708.1657212990. The cubic root of 161497476 is about 544.5719231996.

The spelling of 161497476 in words is "one hundred sixty-one million, four hundred ninety-seven thousand, four hundred seventy-six".