30181964 has 12 divisors (see below), whose sum is σ = 52989384. Its totient is φ = 15042144.

The previous prime is 30181951. The next prime is 30181967. The reversal of 30181964 is 46918103.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30181964.

It is not an unprimeable number, because it can be changed into a prime (30181967) 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 3 ways as a sum of consecutive naturals, for example, 10802 + ... + 13305.

It is an arithmetic number, because the mean of its divisors is an integer number (4415782).

Almost surely, 2^30181964 is an apocalyptic number.

It is an amenable number.

30181964 is a deficient number, since it is larger than the sum of its proper divisors (22807420).

30181964 is a wasteful number, since it uses less digits than its factorization.

30181964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24424 (or 24422 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 30181964 is about 5493.8114274154. The cubic root of 30181964 is about 311.3502118676.

The spelling of 30181964 in words is "thirty million, one hundred eighty-one thousand, nine hundred sixty-four".