2146942980 has 144 divisors (see below), whose sum is σ = 8015314944. Its totient is φ = 452977920.

The previous prime is 2146942979. The next prime is 2146942991. The reversal of 2146942980 is 892496412.

2146942980 is a `hidden beast` number, since 2 + 146 + 9 + 429 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49156 + ... + 81915.

Almost surely, 2^2146942980 is an apocalyptic number.

2146942980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2146942980 is an abundant number, since it is smaller than the sum of its proper divisors (5868371964).

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

2146942980 is a wasteful number, since it uses less digits than its factorization.

2146942980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131106 (or 131101 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2146942980 is about 46335.1160568310. The cubic root of 2146942980 is about 1290.0508723403.

The spelling of 2146942980 in words is "two billion, one hundred forty-six million, nine hundred forty-two thousand, nine hundred eighty".