161157030 has 32 divisors (see below), whose sum is σ = 387638784. Its totient is φ = 42879456.

The previous prime is 161157011. The next prime is 161157041. The reversal of 161157030 is 30751161.

It is a super-3 number, since 3×161157030³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

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, 8259 + ... + 19761.

It is an arithmetic number, because the mean of its divisors is an integer number (12113712).

Almost surely, 2^161157030 is an apocalyptic number.

161157030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161157030 is an abundant number, since it is smaller than the sum of its proper divisors (226481754).

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

161157030 is a wasteful number, since it uses less digits than its factorization.

161157030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11980.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 161157030 is about 12694.7638812228. The cubic root of 161157030 is about 544.1889909779.

The spelling of 161157030 in words is "one hundred sixty-one million, one hundred fifty-seven thousand, thirty".