161730010 has 32 divisors (see below), whose sum is σ = 331953552. Its totient is φ = 56202240.

The previous prime is 161730001. The next prime is 161730029. The reversal of 161730010 is 10037161.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 42941809 + 118788201 = 6553^2 + 10899^2 .

It is a super-2 number, since 2×161730010² = 52313192269200200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161730010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34381 + ... + 38800.

Almost surely, 2^161730010 is an apocalyptic number.

161730010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161730010 is an abundant number, since it is smaller than the sum of its proper divisors (170223542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161730010 is a wasteful number, since it uses less digits than its factorization.

161730010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73218.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 161730010 is about 12717.3114297009. The cubic root of 161730010 is about 544.8331672389.

Adding to 161730010 its reverse (10037161), we get a palindrome (171767171).

The spelling of 161730010 in words is "one hundred sixty-one million, seven hundred thirty thousand, ten".