161478298 has 4 divisors (see below), whose sum is σ = 242217450. Its totient is φ = 80739148.

The previous prime is 161478281. The next prime is 161478319. The reversal of 161478298 is 892874161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892874161 = 29881².

It can be written as a sum of positive squares in only one way, i.e., 153338689 + 8139609 = 12383^2 + 2853^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40369573 + ... + 40369576.

Almost surely, 2^161478298 is an apocalyptic number.

161478298 is a deficient number, since it is larger than the sum of its proper divisors (80739152).

161478298 is an equidigital number, since it uses as much as digits as its factorization.

161478298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80739151.

The product of its digits is 193536, while the sum is 46.

The square root of 161478298 is about 12707.4111446825. The cubic root of 161478298 is about 544.5503661779.

The spelling of 161478298 in words is "one hundred sixty-one million, four hundred seventy-eight thousand, two hundred ninety-eight".