161653030 has 32 divisors (see below), whose sum is σ = 362776320. Its totient is φ = 50385120.

The previous prime is 161653027. The next prime is 161653031. The reversal of 161653030 is 30356161.

It is a super-2 number, since 2×161653030² = 52263404216361800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161652986 and 161653004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161653031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104200 + ... + 105739.

It is an arithmetic number, because the mean of its divisors is an integer number (11336760).

Almost surely, 2^161653030 is an apocalyptic number.

161653030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161653030 is an abundant number, since it is smaller than the sum of its proper divisors (201123290).

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

161653030 is a wasteful number, since it uses less digits than its factorization.

161653030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209964.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 161653030 is about 12714.2844863563. The cubic root of 161653030 is about 544.7467105709.

The spelling of 161653030 in words is "one hundred sixty-one million, six hundred fifty-three thousand, thirty".