2145155236 has 24 divisors (see below), whose sum is σ = 4428709376. Its totient is φ = 889695360.

The previous prime is 2145155171. The next prime is 2145155249. The reversal of 2145155236 is 6325515412.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1234821 + ... + 1236556.

Almost surely, 2^2145155236 is an apocalyptic number.

It is an amenable number.

2145155236 is an abundant number, since it is smaller than the sum of its proper divisors (2283554140).

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

2145155236 is a wasteful number, since it uses less digits than its factorization.

2145155236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471419 (or 2471417 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 2145155236 is about 46315.8205800135. The cubic root of 2145155236 is about 1289.6927008742.

The spelling of 2145155236 in words is "two billion, one hundred forty-five million, one hundred fifty-five thousand, two hundred thirty-six".