161219030 has 16 divisors (see below), whose sum is σ = 331650720. Its totient is φ = 55275072.

The previous prime is 161219017. The next prime is 161219059. The reversal of 161219030 is 30912161.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 161218987 and 161219005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151495 + ... + 1151634.

It is an arithmetic number, because the mean of its divisors is an integer number (20728170).

Almost surely, 2^161219030 is an apocalyptic number.

161219030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161219030 is an abundant number, since it is smaller than the sum of its proper divisors (170431690).

161219030 is a wasteful number, since it uses less digits than its factorization.

161219030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303143.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 161219030 is about 12697.2055980834. The cubic root of 161219030 is about 544.2587684523.

The spelling of 161219030 in words is "one hundred sixty-one million, two hundred nineteen thousand, thirty".