2145546612 has 36 divisors (see below), whose sum is σ = 5916508416. Its totient is φ = 650165520.

The previous prime is 2145546553. The next prime is 2145546617. The reversal of 2145546612 is 2166455412.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145546617) 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 in 11 ways as a sum of consecutive naturals, for example, 2708628 + ... + 2709419.

It is an arithmetic number, because the mean of its divisors is an integer number (164347456).

Almost surely, 2^2145546612 is an apocalyptic number.

2145546612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2145546612 is an abundant number, since it is smaller than the sum of its proper divisors (3770961804).

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

2145546612 is a wasteful number, since it uses less digits than its factorization.

2145546612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418068 (or 5418063 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2145546612 is about 46320.0454662989. The cubic root of 2145546612 is about 1289.7711293982.

The spelling of 2145546612 in words is "two billion, one hundred forty-five million, five hundred forty-six thousand, six hundred twelve".