2145145304 has 8 divisors (see below), whose sum is σ = 4022147460. Its totient is φ = 1072572648.

The previous prime is 2145145291. The next prime is 2145145307. The reversal of 2145145304 is 4035415412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145145307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134071574 + ... + 134071589.

Almost surely, 2^2145145304 is an apocalyptic number.

It is an amenable number.

2145145304 is a deficient number, since it is larger than the sum of its proper divisors (1877002156).

2145145304 is a wasteful number, since it uses less digits than its factorization.

2145145304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268143169 (or 268143165 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2145145304 is about 46315.7133595068. The cubic root of 2145145304 is about 1289.6907104592.

The spelling of 2145145304 in words is "two billion, one hundred forty-five million, one hundred forty-five thousand, three hundred four".