161498245 has 8 divisors (see below), whose sum is σ = 200480760. Its totient is φ = 124743360.

The previous prime is 161498237. The next prime is 161498263. The reversal of 161498245 is 542894161.

It can be written as a sum of positive squares in 4 ways, for example, as 15233409 + 146264836 = 3903^2 + 12094^2 .

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

It is not a de Polignac number, because 161498245 - 2³ = 161498237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161498198 and 161498207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556746 + ... + 557035.

It is an arithmetic number, because the mean of its divisors is an integer number (25060095).

Almost surely, 2^161498245 is an apocalyptic number.

It is an amenable number.

161498245 is a deficient number, since it is larger than the sum of its proper divisors (38982515).

161498245 is a wasteful number, since it uses less digits than its factorization.

161498245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113815.

The product of its digits is 69120, while the sum is 40.

The square root of 161498245 is about 12708.1959773998. The cubic root of 161498245 is about 544.5727875581.

The spelling of 161498245 in words is "one hundred sixty-one million, four hundred ninety-eight thousand, two hundred forty-five".