161151098 has 4 divisors (see below), whose sum is σ = 241726650. Its totient is φ = 80575548.

The previous prime is 161151097. The next prime is 161151119. The reversal of 161151098 is 890151161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 890151161 = 17 ⋅52361833.

It can be written as a sum of positive squares in only one way, i.e., 127080529 + 34070569 = 11273^2 + 5837^2 .

It is not an unprimeable number, because it can be changed into a prime (161151097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40287773 + ... + 40287776.

Almost surely, 2^161151098 is an apocalyptic number.

161151098 is a deficient number, since it is larger than the sum of its proper divisors (80575552).

161151098 is an equidigital number, since it uses as much as digits as its factorization.

161151098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80575551.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 161151098 is about 12694.5302394378. The cubic root of 161151098 is about 544.1823139113.

The spelling of 161151098 in words is "one hundred sixty-one million, one hundred fifty-one thousand, ninety-eight".