2238390045 has 40 divisors (see below), whose sum is σ = 4017338424. Its totient is φ = 1192375296.

The previous prime is 2238390043. The next prime is 2238390053. The reversal of 2238390045 is 5400938322.

2238390045 is a `hidden beast` number, since 223 + 8 + 390 + 0 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 268894404 + 1969495641 = 16398^2 + 44379^2 .

It is not a de Polignac number, because 2238390045 - 2¹ = 2238390043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2238389991 and 2238390009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238390043) 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 39 ways as a sum of consecutive naturals, for example, 392857 + ... + 398513.

Almost surely, 2^2238390045 is an apocalyptic number.

It is an amenable number.

2238390045 is a deficient number, since it is larger than the sum of its proper divisors (1778948379).

2238390045 is an equidigital number, since it uses as much as digits as its factorization.

2238390045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651 (or 6642 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2238390045 is about 47311.6269536358. The cubic root of 2238390045 is about 1308.1129805194.

The spelling of 2238390045 in words is "two billion, two hundred thirty-eight million, three hundred ninety thousand, forty-five".