161580610 has 8 divisors (see below), whose sum is σ = 290845116. Its totient is φ = 64632240.

The previous prime is 161580583. The next prime is 161580611. The reversal of 161580610 is 16085161.

It can be written as a sum of positive squares in 2 ways, for example, as 149891049 + 11689561 = 12243^2 + 3419^2 .

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

It is a super-2 number, since 2×161580610² = 52216587055944200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161580611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8079021 + ... + 8079040.

Almost surely, 2^161580610 is an apocalyptic number.

161580610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161580610 is a deficient number, since it is larger than the sum of its proper divisors (129264506).

161580610 is a wasteful number, since it uses less digits than its factorization.

161580610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16158068.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 161580610 is about 12711.4361895106. The cubic root of 161580610 is about 544.6653502040.

The spelling of 161580610 in words is "one hundred sixty-one million, five hundred eighty thousand, six hundred ten".