161274459 has 8 divisors (see below), whose sum is σ = 224381952. Its totient is φ = 102841640.

The previous prime is 161274419. The next prime is 161274469. The reversal of 161274459 is 954472161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161274459 - 2⁷ = 161274331 is a prime.

It is a super-2 number, since 2×161274459² = 52018902251485362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161274419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168587 + ... + 1168724.

It is an arithmetic number, because the mean of its divisors is an integer number (28047744).

Almost surely, 2^161274459 is an apocalyptic number.

161274459 is a deficient number, since it is larger than the sum of its proper divisors (63107493).

161274459 is a wasteful number, since it uses less digits than its factorization.

161274459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337337.

The product of its digits is 60480, while the sum is 39.

The square root of 161274459 is about 12699.3881348670. The cubic root of 161274459 is about 544.3211354955.

The spelling of 161274459 in words is "one hundred sixty-one million, two hundred seventy-four thousand, four hundred fifty-nine".