161913430 has 32 divisors (see below), whose sum is σ = 333527040. Its totient is φ = 55438560.

The previous prime is 161913419. The next prime is 161913431. The reversal of 161913430 is 34319161.

161913430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161913431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85231 + ... + 87109.

It is an arithmetic number, because the mean of its divisors is an integer number (10422720).

Almost surely, 2^161913430 is an apocalyptic number.

161913430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161913430 is an abundant number, since it is smaller than the sum of its proper divisors (171613610).

161913430 is a wasteful number, since it uses less digits than its factorization.

161913430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 161913430 is about 12724.5208161251. The cubic root of 161913430 is about 545.0390567639.

The spelling of 161913430 in words is "one hundred sixty-one million, nine hundred thirteen thousand, four hundred thirty".