2645144390 has 16 divisors (see below), whose sum is σ = 5441440032. Its totient is φ = 906906624.

The previous prime is 2645144357. The next prime is 2645144399. The reversal of 2645144390 is 934415462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645144399) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18893819 + ... + 18893958.

It is an arithmetic number, because the mean of its divisors is an integer number (340090002).

Almost surely, 2^2645144390 is an apocalyptic number.

2645144390 is an abundant number, since it is smaller than the sum of its proper divisors (2796295642).

2645144390 is a wasteful number, since it uses less digits than its factorization.

2645144390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37787791.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2645144390 is about 51430.9672279260. The cubic root of 2645144390 is about 1382.9817885751.

The spelling of 2645144390 in words is "two billion, six hundred forty-five million, one hundred forty-four thousand, three hundred ninety".